English

    Overview

  • Dr. Sandeep Aggarwal attended medical school at All India Institute of Medical Sciences (AIIMS), New Delhi and completed his Masters in Surgery (MS) followed by Senior- Residency from AIIMS. He also completed a 1-year Research fellowship at Mount Sinai School of Medicine in New York, USA and a 4 month period at Homerton University, London, UK as a Commonwealth Fellow where he was trained in Bariatric Surgery. He has been a Faculty member in the Department of Surgical Disciplines at AIIMS since 1999 and was head of Surgery Unit II till June 2024. He is the foremost Bariatric Surgeon in Delhi. 

  • Dr. Sandeep is a renowned Laparoscopic, Bariatric, GI and Renal Transplant Surgeon in Delhi with more than 30 years of surgical experience. He is the chairman of the Institute of Bariatric, Minimal Access, GI and Robotic Surgery. Dr. Sandeep is widely recognized as a global leader in the field of Bariatric surgery having pioneered and nurtured this specialty in the public sector in India through his excellent clinical and research work in this field. He has performed more than 1300 bariatric surgery procedures, more than 400 renal transplants and more than 10000 laparoscopic surgical procedures including complex GI surgical procedures, adrenalectomy, splenectomy, hernias etc. 

  • Dr. Sandeep is an active researcher with more than 140 publications and several book chapters to his credit. He is a dedicated teacher, has trained several residents and fellows, performed live surgery at several workshops and has delivered more than 200 invited lectures at various national and international conferences. Dr. Sandeep holds editorial positions in several reputed journals including Editor of Journal of Minimal Access Surgery (JMAS). He has been invited as an expert on several Doordarshan health programs and is frequently quoted in media (both print and electronic) on bariatric surgery topics. Dr. Sandeep has been a Convenor/member of several expert committees. He was awarded the Best Researcher Award by the Indian Association of Gastrointestinal Endo Surgeons (IAGES) in the year 2020.

    • Field of Expertise

  • Bariatric Surgery
  • Hernia Surgery
  • Laparoscopic Upper GI Surgery
  • Solid Organ including Laparoscopic Splenectomy And Adrenalectomy
  • Renal Transplantation

    • Fellowship & Membership

  • Commonwealth Fellow
  • Fellowship of American College of Surgeons (FACS)
  • Fellowship of International College of Laparoscopic Surgeons (FCLS)
  • Fellowship of International Union Against Cancer (UICC)
  • Research Fellow in Division of Laparoscopic Surgery; Mount Sinai School of Medicine, New York, USA. (Dec 2005-Dec 2006)

    • Languages Spoken

  • English
  • Hindi

    • Awards & Achievements

  • Best Researcher Award” of the Indian Association of Gastrointestinal Endoscopic Surgeons (IAGES) for the year 2020
  • Obesity Surgery Editors Recognition Award for Distinction in Reviewing 2020
  • Certificate for Commendation at AIIMS Excellence Research Award; Awarded at 3rd AIIMS Research Day held on 30th January 2024
  • Pioneered this speciality of surgery in the government sector in the year 2008. Established and nurtured the specialty of Bariatric Surgery in the Country.
  • Have performed more than 1300 bariatric surgical procedures with excellent results at par with World's best centres
  • Established a dedicated Bariatric Surgery Clinic at AIIMS. Since its establishment thousands of new obese patients have been registered and counselled for weight loss surgery.
  • Instrumental in establishing the 2-year Bariatric Fellowship Program at AIIMS for proper training of surgeons which would help in capacity building
  • Helped start similar programs in other public hospitals in the country and mentored the surgeons at AIIMS Bhatinda, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Lok Nayak Jai Prakash (LNJP) hospital and Lady Hardinge Medical College (LHMC), New Delhi and help them start bariatric surgery in their hospitals.
  • First one to perform bariatric surgery in Bihar at the invitation of the Bihar Chapter of the Association of Surgeons of India (ASI) and hence kick start the program in Bihar.
  • Recognized internationally as an expert in this field. Invited to be Section –editor of an international book authored by the World's leading experts on Bariatric Surgery titled “Obesity, Bariatric and Metabolic Surgery: A Practical Guide”. Contributed a chapter on the Technique of Laparoscopic Sleeve Gastrectomy (LSG), the most popular bariatric surgical procedure.
  • Member of various Expert committees and meetings to develop guidelines for issues related to Bariatric Surgery in India. Nominated member of the executive committee of Obesity and Metabolic Surgery Society of India (OSSI) for a period of three years. Frequently quoted in the national media-both print and electronic. Has been invited as an expert on Doordarshan health shows several times.
  • Convenor for Bariatric Surgery Fellowship of National Board of Examinations
  • Delivered more than 150 invited lectures related to Bariatric Surgery as well as MAS
  • Founder President of the “Foundation for Obesity Research and Metabolic Surgery” (FORMS) - a non-profit non-governmental society registered under the Societies Act for creating awareness and education about Bariatric surgery
  • Organized several workshops and meetings to spread knowledge and skills including Cadaver Courses on Bariatric surgery. Organizing Chairman of the First National Postgraduate CME on Bariatric Surgery held at AIIMS in year 2017 which focused on postgraduate students to fill the gap in medical curriculum.
  • Other Achievements
  • Editor, Journal of Minimal Access Surgery (JMAS), a PubMed indexed journal
  • Member Editorial Board of the prestigious journal- ‘Obesity Surgery’
  • Associate Editor, Journal of Bariatric Surgery
  • Chairman of the Scientific Committee of Obesity & Metabolic Surgery Society of India (OSSI)
  • Past Member of Institutional Ethics Committee (IEC) for Post Graduate Research, AIIMS
  • Past Member of the IEC Sub-committee for Serious Adverse Events (SAE)
  • Member of the SAGES-MIRA Expert Group Meeting for Framing Guidelines for Use of Robots in Surgery held in New York, USA in 2006
  • Section Editor of Section on Laparoscopic Sleeve Gastrectomy In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: First Edition, Publisher: Springer.
  • Co-Chairman of the Expert Group to frame National Guidelines for the Surgical Treatment of Obstructive Sleep Apnea
  • Ex Board member of the Society of Endoscopic and Laparoscopic Surgery of India (SELSI)
  • Member of the committee to finalize rules and package for Bariatric Surgery for CGHS patients, Ministry of Health, GOI

    • Talks & Publications

  • List of Important Publications (Full Papers)
  • For complete list
  • Pubmed:Click Here
  • ORCID: Click Here
  • Chapter in Books
  • Sandeep Aggarwal, Mehul Gupta, Vitish Singla, Michel Gagner. LSG: The Tech-nique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: Second Edition, Publisher: Springer, Editor: Sanjay Agrawal
  • Sandeep Aggarwal, Vitish Singla. Current Status of One Anastomosis Gastric By-pass. Chapter 12 in IAGES Recent Advances in Minimal Access Surgery 2, Edition: Second, Publisher: Jaypee Brothers. Editor: Subhash Khanna
  • Sandeep Aggarwal, Vitish Singla, Devender Singh, Amit Bhambri, Prasanna Rama-na. GI Complications in Bariatric Surgery in Management of Nutritional and Meta-bolic Complications of Bariatric Surgery. Publisher: Springer Nature. Editors: Aparna Govil Bhasker, Nimisha Kantharia
  • Sandeep Aggarwal, Pratyusha Priyadarshini, Michel Gagner. LSG: The Technique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edi-tion: First Edition, Publisher: Springer, Editors: Sanjay Agrawal, pp.247-57 . DOI: 10.1007/978-3-319-04343-2
  • Sandeep Aggarwal · Pratyusha Priyadarshini · Sanjay Agrawal. Current Concepts in Bariatric Surgery: A Review. Chapter in GI Surgery Annual. Editor: T K Chatto-padhay. pp 2016
  • Harshit Garg, Sandeep Aggarwal. Bariatric Surgery: Current Concepts in Roshan Lall Gupta's Recent Advances in Surgery – 14, Publisher: Jaypee, Editor: Puneet, pp: 217-236, · Chapter · Nov 2015
  • Full papers in Indexed Journals
  • Singh, B., Saikaustubh, Y., Singla, V. et al. One Anastomosis Gastric Bypass (OAGB) vs Roux en Y Gastric Bypass (RYGB) for Remission of T2DM in Patients with Morbid Obesity: a Randomized Controlled Trial. OBES SURG 33, 1218–1227 (2023). https://doi.org/10.1007/s11695-023-06515-4
  • Umang Arora1 Sagnik Biswas1 Sandeep Aggarwal1 Ajay Duseja2,* Shalimar1,* MASLD screening and diagnostic algorithms are interchangeable with existing NAFLD literature. Journal of Hepatology, February 2024. vol. 80 j e51–e91.
  • Sai Divya Yadavalli, Arun Kumar, MS, MCh, Vitish Singla, MS, MCh, Venu Madhav Jarapala, MBBS, MS, Vineet Ahuja, MD, DM, Surabhi Vyas, MD, DNB, and Sandeep Aggarwal, MS, FACS. Incidence of Barrett's Esophagus Following Sleeve Gastrectomy in Southeast Asian Population. Journal of Laparoendoscopic & Advanced Surgical Techniques. 2024;34(2):127-34
  • Sachan A, Aggarwal S, Pol MM, Singh A, Yadav R. Expression analysis of MMP14: Key enzyme action in modulating visceral adipose tissue plasticity in patients with obesity. Clinical Obesity. 2023;13(5):e12607. doi:10.1111/cob.12607
  • Elhence A, Anand A, Biswas S, Vaishnav M, Yadav R, Das P, ---- Agarwal S, etal. Compensated Advanced Chronic Liver Disease in Nonalcoholic Fatty Liver Disease: Two-Step Strategy is Better than Baveno Criteria. Dig Dis Sci 2023; 68:1016–1025
  • Umang Arora, Ritik M Goyal, Levin K J The-----Sandeep Aggarwal, Narendra Choudhary, Prajna Anirvan, Shivaram P Singh, Arka De, Ajay Duseja, Shalimar. Poor Performance of Non-Invasive Tests for Advanced Fibrosis in Nonalcoholic Fatty Liver Disease: A Multicentric Asian Study. Dig Dis Sci 2023; 68: 4485–4498.
  • Kumar A, Madhav JV, Singla V, Monga S, Aggarwal S. Concomitant Hiatal Hernia Repair With Sleeve Gastrectomy: Impact on Gastroesophageal Reflux? Surg Laparosc Endosc Percutan Tech. 2023 Oct 1;33(5):435-439. doi: 10.1097/SLE.0000000000001216. PMID: 37671614.
  • Singla V, Gupta A, Gupta A, Monga S, Kumar A, Chekuri R, Gupta M, Kashyap L, Shalimar, Aggarwal S. Outcomes of Laparoscopic Sleeve Gastrectomy (LSG) vs One-Anastomosis Gastric Bypass (OAGB) in Patients with Super-Super Obesity (BMI ≥ 60 kg/m2). Obes Surg. 2023 Nov 24. doi: 10.1007/s11695-023-06960-1.
  • Bhasker, Aparna Govil; Tantia, Om1; Khaitan, Manish2; Wadhawan, Randeep3; Kular, K. S.4; Baig, Sarfaraz Jalil5; Shah, Sumeet6; ---------Aggarwal, Sandeep17; et al. A Delphi Consensus on the Surgical Technique of Laparoscopic Sleeve Gastrectomy: An Obesity and Metabolic Surgery Society of India Initiative. Journal of Bariatric Surgery 2(2):p 79-84, May–Aug 2023. | DOI: 10.4103/jbs.jbs_7_23
  • Gupta, M., Singla, V., Kumar, A. et al. Response to Letter to the Editor: Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic Review and Meta-analysis. OBES SURG. 2023; 33:372–373
  • Gupta M, Singla V, Kumar A, Chekuri R, Kaustubh YS, Aggarwal S. Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic review and Meta-analysis. Obes Surg. 2022 Aug;32(8):2744-2752
  • Omar I, Miller K, Madhok B, Amr B, Singhal R, Graham Y, Pouwels S, Abu Hilal M, Aggarwal S, et al. The first international Delphi consensus statement on Laparoscopic Gastrointestinal surgery. Int J Surg. 2022 Aug;104:106766. doi: 10.1016/j.ijsu.2022.106766. Epub 2022 Jul 13. PubMed PMID: 35842089.
  • Singla V, Kumar A, Gupta M, Manohar M, Monga S, Agarwal S, Sharma AK, Aggarwal S. Gastrointestinal Quality of Life in Morbidly Obese Patients Undergoing One Anastomosis Gastric Bypass (OAGB): Derivation of a ""Mini GIQLI"" Score. Obes Surg. 2022 Jul;32(7):2332-2340.
  • Arumugaswamy PR, Singla V, Singh P, Kumar R, Aggarwal S. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surg Endosc. 2022 Jul;36(7):4771-4779
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, Angrisani L, Badiuddin FM, Balibrea JM, Bashir A, Behrens E, Bhatia K, Biertho L, Biter LU, Dargent J, De Luca M, DeMaria E, Elfawal MH, Fried M, Gawdat KA, Graham Y, Herrera MF, Himpens JM, Hussain FA, Kasama K, Kerrigan D, Kow L, Kristinsson J, Kurian M, Liem R, Lutfi RE, Menon V, Miller K, Noel P, Ospanov O, Ozmen MM, Peterli R, Ponce J, Prager G, Prasad A, Raj PP, Rodriguez NR, Rosenthal R, Sakran N, Santos JN, Shabbir A, Shikora SA, Small PK, Taylor CJ, Wang C, Weiner RA, Wylezol M, Yang W, Aminian A. The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Dec;35(12):7027-7033. doi: 10.1007/s00464-020-08216-w. Epub 2021 Jan 12. PubMed PMID: 33433676.
  • Kaul A, Kumar A, Baksi A, Singla V, Aggarwal S, Gulati G, Narang R, Kashyap L. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc. 2021 Nov;35(11):6006-6012. doi: 10.1007/s00464-020-08088-0. Epub 2020 Oct 13. PubMed PMID: 33048234.
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2021 Oct-Dec;17(4):462-469. doi: 10.4103/jmas.JMAS_19_20. PubMed PMID: 32964893; PubMed Central PMCID: PMC8486063.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2021 Jul-Sep;17(3):322-328. doi: 10.4103/jmas.JMAS_167_19. PubMed PMID: 32964884; PubMed Central PMCID: PMC8270047.
  • Bhambri A, Singla V, Kaul A, Shalimar, Kashyap L, Aggarwal S. Surgical management of super-super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian J Endosc Surg. 2021 Jul;14(3):570-573. doi: 10.1111/ases.12882. Epub 2020 Oct 22. PubMed PMID: 33094552.
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2021 May;36(5):1309-1316. doi: 10.1111/jgh.15358. Epub 2020 Dec 16. PubMed PMID: 33232525.1.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 May;31(5):2344-2345. doi: 10.1007/s11695-020-05162-3. Epub 2021 Jan 19.
  • Thakkar H, Vincent V, Shukla S, Sra M, Kanga U, Aggarwal S, Singh A. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr. 2021 Apr 17;13(1):46. doi: 10.1186/s13098-021-00662-3.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, Bindal V, Katakwar A, Vennapusa A, Bhasker AG, Peters A, Goel D, Bedi D, Palep J, Kona L, Mehrotra M, Baijal M, Bhandari M, Dukkipati N, Wadhawan R, Baig S, Pattanshetti S, Ugale S. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PubMed PMID: 32964881;
  • Singh, D., Baksi, A., Ramana, P. et al. Five-Year Outcomes of Sleeve Gastrectomy in Patients with Class I Obesity and Type 2 Diabetes Mellitus. OBES SURG (2021).
  • Prasanna Ramana Arumugaswamy, Vitish Singla, · Prabhjot Singh, Rajeev Kumar, Sandeep Aggarwal. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surgical Endoscopy (2021) https://doi.org/10.1007/s00464-021-08818-y
  • Mózes FE, Lee JA, Selvaraj EA,-------- Aggarwal S, ---- et al. Diagnostic accuracy of non-invasive tests for advanced fibrosis in patients with NAFLD: an individual patient data meta-analysis. Gut 2021 Epub ahead of print: doi:10.1136/gutjnl-2021-324243
  • Baksi, A., Aggarwal, S. Reply to: Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. OBES SURG (2021). https://doi.org/10.1007/s11695-021-05490-y
  • Mukti Sharma, Sandeep Aggarwal, Umakant Nayar, Naval Kishore Vikram, Anoop Misra, Kalpana Luthra. Differential expression of insulin receptor substrate-1(IRS-1) in visceral and subcutaneous adipose depots of morbidly obese subjects undergoing bariatric surgery in a tertiary care center in north India; SNP analysis and correlation with metabolic profile. Diabetes & Metabolic Syndrome: Clinical Research & Reviews. 2021;15(3). 981-986 ISSN 1871-4021, https://doi.org/10.1016/j.dsx.2021.04.014.
  • 29. Thakkar, H., Vincent, V., Sukhla, S---- Aggarwal S -- et al. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr 13, 46 (2021). https://doi.org/10.1186/s13098-021-00662-3
  • Jain S, Baksi A, Kumar A, Aggarwal S. Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. Obes Surg. 2021 Mar 10. doi: 10.1007/s11695-021-05322-z. Epub ahead of print. PMID: 33694055.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 Jan 19. doi: 10.1007/s11695-020-05162-3. Epub ahead of print. PMID: 33469860.
  • Petroff D, Blank V, Newsome PN, Shalimar, Voican CS, Thiele M, -------, Aggarwal S, et al. Assessment of hepatic steatosis by controlled attenuation parameter using the M and XL probes: an individual patient data meta-analysis. Lancet Gastroenterol Hepatol. 2021 Jan 15:S2468-1253(20)30357-5. doi: 10.1016/S2468-1253(20)30357-5. Epub ahead of print. PMID: 33460567.
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, et al The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Jan 12. doi: 10.1007/s00464-020-08216-w. Epub ahead of print. PMID: 33433676.
  • Agarwal L, Sahu AK, Baksi A, Agarwal A, Aggarwal S, Safety of Metabolic and Bariatric Surgery in Obese Patients with Liver Cirrhosis: A Systematic Review and Meta-analysis, Surgery for Obesity and Related Diseases (2020), doi: https://doi.org/10.1016/j.soard.2020.11.004
  • Sachan A, Singh A, Shukla S, Aggarwal S, Mir I, Yadav R. Serum Adipocytokines Levels and Their Association with Insulin Sensitivity in Morbidly Obese Individuals Undergoing Bariatric Surgery. J Obes Metab Syndr. 2020 Dec 30;29(4):303-312. doi: 10.7570/jomes20090. PMID: 33380577; PMCID: PMC7789018.
  • Kaul, A., Kumar, A., Baksi, A. Aggarwal S. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc (2020). https://doi.org/10.1007/s00464-020-08088-0
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2020 Nov 24;. doi: 10.1111/jgh.15358. [Epub ahead of print] PubMed PMID: 33232525.
  • Amit Bhambri, Vitish Singla, Aashir Kaul, Shalimar, Lokesh Kashyap, Sandeep Aggarwal. Surgical management of super‐super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian Journal of Endoscopic Surgery. First published: 22 October 2020
  • https://doi.org/10.1111/ases.12882
  • Aggarwal, S., Baksi, A. & Kamtam, D.N.H. Reply to: Incidence of Marginal Ulcers After Gastric Bypass Seems to Be Inversely Related to the Duration of Prophylaxis with Proton Pump Inhibitors. OBES SURG (2020). https://doi.org/10.1007/s11695-020-05051-9
  • Agarwal, L., Aggarwal, S., Shalimar et al. Bariatric Surgery in Nonalcoholic Fatty Liver Disease (NAFLD): Impact Assessment Using Paired Liver Biopsy and Fibroscan. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04977-4
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2020 Sep 19. doi: 10.4103/jmas.JMAS_19_20. Epub ahead of print. PMID: 32964893.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2020 Sep 12. doi: 10.4103/jmas.JMAS_167_19. Epub ahead of print. PMID: 32964884.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, et al. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PMID: 32964881.
  • Singla V, Aggarwal S, Aggarwal S, Gupta M, Singh D. Correlation of weight loss with residual gastric volume on computerized tomography in patients undergoing sleeve gastrectomy: A systematic review. Clin Obes. 2020 Oct;10(5):e12394. doi: 10.1111/cob.12394. Epub 2020 Aug 7. PMID: 32767720.
  • Yadav R, Aggarwal S, Singh A. SARS-CoV-2-host dynamics: Increased risk of adverse outcomes of COVID-19 in obesity. Diabetes Metab Syndr. 2020 Sep-Oct;14(5):1355-1360. doi: 10.1016/j.dsx.2020.07.030. Epub 2020 Jul 21. PMID: 32755835; PMCID: PMC7372253.
  • Pouwels S, Omar I, Aggarwal S, Aminian A, Angrisani L, Balibrea JM, et al. The First Modified Delphi Consensus Statement for Resuming Bariatric and Metabolic Surgery in the COVID-19 Times. Obes Surg. 2020 Aug 1:1–6. doi: 10.1007/s11695-020-04883-9. Epub ahead of print. PMID: 32740826; PMCID: PMC7395568
  • Baksi A, Kamtam DNH, Aggarwal S, Ahuja V, Kashyap L, Shende DR. Should Surveillance Endoscopy Be Routine After One Anastomosis Gastric Bypass to Detect Marginal Ulcers: Initial Outcomes in a Tertiary Referral Centre. Obes Surg. 2020 Jul 27. doi: 10.1007/s11695-020-04864-y. Epub ahead of print. PMID: 32720263.
  • Kaul, A., Singla, V., Baksi, A. et al. Safety and Efficacy of Bariatric Surgery in Advanced Liver Fibrosis. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04827-3
  • Aggarwal, S., Mahawar, K., Khaitan, M. et al. Obesity and Metabolic Surgery Society of India (OSSI) Recommendations for Bariatric and Metabolic Surgery Practice During the COVID-19 Pandemic. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04940-
  • Khan WA, Singla V, Aggarwal S, Gupta Y. Outcome of Bariatric Surgery on Hypothyroidism: Experience from a Tertiary Care Centre in India. April 2020. Surgery for Obesity and Related Diseases. DOI: 10.1016/j.soard.2020.03.035
  • Singh D, Arumalla K, Aggarwal S, Singla V, Ganie A, Malhotra N. Impact of Bariatric Surgery on Clinical, Biochemical, and Hormonal Parameters in Women with Polycystic Ovary Syndrome (PCOS). Obes Surg. 2020 Jun;30(6):2294-2300. doi: 10.1007/s11695-020-04487-3. PubMed PMID: 32088855.
  • Shalimar, Kumar R, Rout G, Kumar R, Yadav R, Das P, Aggarwal S, Gunjan D, Saraya A, Nayak B. Body mass index-based controlled attenuation parameter cut-offs for assessment of hepatic steatosis in non-alcoholic fatty liver disease. Indian J Gastroenterol. 2020 Feb;39(1):32-41. doi: 10.1007/s12664-019-00991-2. Epub 2020 Mar 17. PubMed PMID: 32185692.
  • Singla V, Aggarwal S, Singh B, Tharun G, Katiyar V, Bhambri A. Outcomes in Super Obese Patients Undergoing One Anastomosis Gastric Bypass or Laparoscopic Sleeve Gastrectomy. Obes Surg. 2019 Apr;29(4):1242-1247. doi: 10.1007/s11695-018-03673-8. PubMed PMID: 30656569.
  • Singla V, Gattu T, Aggarwal S, Bhambri A, Agarwal S. Evaluation of Epworth Sleepiness Scale to Predict Obstructive Sleep Apnea in Morbidly Obese Patients and Increasing Its Utility. J Laparoendosc Adv Surg Tech A. 2019 Mar;29(3):298-302. doi: 10.1089/lap.2018.0329. Epub 2018 Aug 15. PubMed PMID: 30109974. Vincent V, Thakkar H, Aggarwal S, Mridha AR, Ramakrishnan L, Singh A. ATP-binding cassette transporter A1 (ABCA1) expression in adipose tissue and its modulation with insulin resistance in obesity. Diabetes Metab Syndr Obes. 2019;12:275-284. doi: 10.2147/DMSO.S186565. eCollection 2019. PubMed PMID: 30881070; PubMed Central PMCID: PMC6395069.
  • Aggarwal S, Bhambri A, Singla V, Dash NR, Sharma A. Adenocarcinoma of oesophagus involving gastro-oesophageal junction following mini-gastric bypass/one anastomosis gastric bypass. J Minim Access Surg. 2019 Feb 18;. doi: 10.4103/jmas.JMAS_320_18. [Epub ahead of print] PubMed PMID: 30777997; PubMed Central PMCID: PMC7176000.
  • Arumalla K, Singla V, Aggarwal S, Garg H, Goel R, Katiyar V. Outcomes in morbidly obese adolescent patients undergoing laparoscopic sleeve gastrectomy in the Indian subcontinent: A retrospective review. J Minim Access Surg. 2019 Jan-Mar;15(1):31-36. doi: 10.4103/jmas.JMAS_143_17. PubMed PMID: 29483370; PubMed Central PMCID: PMC6293674.
  • 58. Singla V, Aggarwal S, Garg H, Kashyap L, Shende DR, Agarwal S. Outcomes in Super Obese Patients Undergoing Laparoscopic Sleeve Gastrectomy. J Laparoendosc Adv Surg Tech A. 2018 Mar;28(3):256-262. doi: 10.1089/lap.2017.0536. Epub 2017 Nov 3. PubMed PMID: 29099314.
  • 59. Garg H, Aggarwal S, Shalimar, Yadav R, Datta Gupta S, Agarwal L, Agarwal S. Utility of transient elastography (fibroscan) and impact of bariatric surgery on nonalcoholic fatty liver disease (NAFLD) in morbidly obese patients. Surg Obes Relat Dis. 2018 Jan;14(1):81-91. doi: 10.1016/j.soard.2017.09.005. Epub 2017 Sep 11. PubMed PMID: 29126863.
  • 60. Garg H, Aggarwal S, Misra MC, Priyadarshini P, Swami A, Kashyap L, Jaiswal R. Mid to long term outcomes of Laparoscopic Sleeve Gastrectomy in Indian population: 3-7 year results - A retrospective cohort study. Int J Surg. 2017 Dec;48:201-209. doi: 10.1016/j.ijsu.2017.10.076. Epub 2017 Nov 6. PubMed PMID: 29122706.
  • Priyadarshini P, Singh VP, Aggarwal S, Garg H, Sinha S, Guleria R. Impact of bariatric surgery on obstructive sleep apnoea-hypopnea syndrome in morbidly obese patients. J Minim Access Surg. 2017 Oct-Dec;13(4):291-295. doi: 10.4103/jmas.JMAS_5_17. PubMed PMID: 28872099; PubMed Central PMCID: PMC5607797.
  • Garg H, Priyadarshini P, Aggarwal S, Agarwal S, Chaudhary R. Comparative study of outcomes following laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy in morbidly obese patients: A case control study. World J Gastrointest Endosc. 2017 Apr 16;9(4):162-170. doi: 10.4253/wjge.v9.i4.162. PubMed PMID: 28465782; PubMed Central PMCID: PMC5394722.
  • Garg H, Vigneshwaran B, Aggarwal S, Ahuja V. Impact of concomitant laparoscopic sleeve gastrectomy and hiatal hernia repair on gastro-oesophageal reflux disease in morbidly obese patients. J Minim Access Surg. 2017 Apr-Jun;13(2):103-108. doi: 10.4103/0972-9941.201730. PubMed PMID: 28281472; PubMed Central PMCID: PMC5363114.
  • Vigneshwaran B, Wahal A, Aggarwal S, Priyadarshini P, Bhattacharjee H, Khadgawat R, Yadav R. Impact of Sleeve Gastrectomy on Type 2 Diabetes Mellitus, Gastric Emptying Time, Glucagon-Like Peptide 1 (GLP-1), Ghrelin and Leptin in Non-morbidly Obese Subjects with BMI 30-35.0 kg/m2: a Prospective Study. Obes Surg. 2016 Dec;26(12):2817-2823. doi: 10.1007/s11695-016-2226-9. PubMed PMID: 27185177.
  • Sharma SK, Katoch VM, Mohan A, Kadhiravan T, Elavarasi A, Ragesh R, Nischal N, Sethi P, Behera D, Bhatia M, Ghoshal AG, Gothi D, Joshi J, Kanwar MS, Kharbanda OP, Kumar S, Mohapatra PR, Mallick BN, Mehta R, Prasad R, Sharma SC, Sikka K, Aggarwal S, Shukla G, Suri JC, Vengamma B, Grover A, Vijayan VK, Ramakrishnan N, Gupta R. Consensus and evidence-based Indian initiative on obstructive sleep apnea guidelines 2014 (first edition). Lung India. 2015 Jul-Aug;32(4):422-34. doi: 10.4103/0970-2113.159677. PubMed PMID: 26180408; PubMed Central PMCID: PMC4502224.
  • Mahawar KK, Aggarwal S, Carr WR, Jennings N, Balupuri S, Small PK. Consensus statements and bariatric surgery. Obes Surg. 2015 Jun;25(6):1063-5. doi: 10.1007/s11695-015-1606-x. PubMed PMID: 25680578.
  • Aggarwal S, Sharma AP, Kumar R, Anand S. Totally Robotic Roux-en-Y Gastric Bypass: Technique. Indian J Surg. 2015 Apr;77(2):164-6. doi: 10.1007/s12262-013-0948-7. Epub 2013 Jul 20. PubMed PMID: 26139977; PubMed Central PMCID: PMC4484530.
  • Aggarwal S, Modi S, Jose T. Laparoscopic sleeve gastrectomy leads to reduction in thyroxine requirement in morbidly obese patients with hypothyroidism. World J Surg. 2014 Oct;38(10):2628-31. doi: 10.1007/s00268-014-2646-4. PubMed PMID: 24844659.
  • Aggarwal S, Uniyal M. Bariatric surgery: An overview. Natl Med J India. 2014 Sep-Oct;27(5):261-6. Review. PubMed PMID: 26037426.
  • Sharma A, Aggarwal S, Ahuja V, Bal C. Evaluation of gastroesophageal reflux before and after sleeve gastrectomy using symptom scoring, scintigraphy, and endoscopy. Surg Obes Relat Dis. 2014 Jul-Aug;10(4):600-5. doi: 10.1016/j.soard.2014.01.017. Epub 2014 Jan 28. PubMed PMID: 24837563.
  • Aggarwal S, Sharma AP, Ramaswamy N. Outcome of laparoscopic sleeve gastrectomy with and without staple line oversewing in morbidly obese patients: a randomized study. J Laparoendosc Adv Surg Tech A. 2013 Nov;23(11):895-9. doi: 10.1089/lap.2013.0137. Epub 2013 Sep 28. PubMed PMID: 24073838.
  • Aggarwal S, Bhattacharjee H, Chander Misra M. Practice of routine intraoperative leak test during laparoscopic sleeve gastrectomy should not be discarded. Surg Obes Relat Dis. 2011 Sep-Oct;7(5):e24-5. doi: 10.1016/j.soard.2011.03.013. Epub 2011 Apr 15. PubMed PMID: 21616724.
  • Misra A, Chowbey P, Makkar BM, Vikram NK, Wasir JS, Chadha D, Joshi SR, Sadikot S, Gupta R, Gulati S, Munjal YP. Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians and recommendations for physical activity, medical and surgical management. J Assoc Physicians India. 2009 Feb;57:163-70. Review. PubMed PMID: 19582986.
  • Aggarwal S, Kini SU, Herron DM. Laparoscopic sleeve gastrectomy for morbid obesity: a review. Surg Obes Relat Dis. 2007 Mar-Apr;3(2):189-94. doi: 10.1016/j.soard.2006.10.013. Review. PubMed PMID: 17386400.

    Fellowship & Membership

  • Commonwealth Fellow
  • Fellowship of American College of Surgeons (FACS)
  • Fellowship of International College of Laparoscopic Surgeons (FCLS)
  • Fellowship of International Union Against Cancer (UICC)
  • Research Fellow in Division of Laparoscopic Surgery; Mount Sinai School of Medicine, New York, USA. (Dec 2005-Dec 2006)

    • Overview

  • Dr. Sandeep Aggarwal attended medical school at All India Institute of Medical Sciences (AIIMS), New Delhi and completed his Masters in Surgery (MS) followed by Senior- Residency from AIIMS. He also completed a 1-year Research fellowship at Mount Sinai School of Medicine in New York, USA and a 4 month period at Homerton University, London, UK as a Commonwealth Fellow where he was trained in Bariatric Surgery. He has been a Faculty member in the Department of Surgical Disciplines at AIIMS since 1999 and was head of Surgery Unit II till June 2024. He is the foremost Bariatric Surgeon in Delhi. 

  • Dr. Sandeep is a renowned Laparoscopic, Bariatric, GI and Renal Transplant Surgeon in Delhi with more than 30 years of surgical experience. He is the chairman of the Institute of Bariatric, Minimal Access, GI and Robotic Surgery. Dr. Sandeep is widely recognized as a global leader in the field of Bariatric surgery having pioneered and nurtured this specialty in the public sector in India through his excellent clinical and research work in this field. He has performed more than 1300 bariatric surgery procedures, more than 400 renal transplants and more than 10000 laparoscopic surgical procedures including complex GI surgical procedures, adrenalectomy, splenectomy, hernias etc. 

  • Dr. Sandeep is an active researcher with more than 140 publications and several book chapters to his credit. He is a dedicated teacher, has trained several residents and fellows, performed live surgery at several workshops and has delivered more than 200 invited lectures at various national and international conferences. Dr. Sandeep holds editorial positions in several reputed journals including Editor of Journal of Minimal Access Surgery (JMAS). He has been invited as an expert on several Doordarshan health programs and is frequently quoted in media (both print and electronic) on bariatric surgery topics. Dr. Sandeep has been a Convenor/member of several expert committees. He was awarded the Best Researcher Award by the Indian Association of Gastrointestinal Endo Surgeons (IAGES) in the year 2020.

    • Field of Expertise

  • Bariatric Surgery
  • Hernia Surgery
  • Laparoscopic Upper GI Surgery
  • Solid Organ including Laparoscopic Splenectomy And Adrenalectomy
  • Renal Transplantation

    • Languages Spoken

  • English
  • Hindi

    • Awards & Achievements

  • Best Researcher Award” of the Indian Association of Gastrointestinal Endoscopic Surgeons (IAGES) for the year 2020
  • Obesity Surgery Editors Recognition Award for Distinction in Reviewing 2020
  • Certificate for Commendation at AIIMS Excellence Research Award; Awarded at 3rd AIIMS Research Day held on 30th January 2024
  • Pioneered this speciality of surgery in the government sector in the year 2008. Established and nurtured the specialty of Bariatric Surgery in the Country.
  • Have performed more than 1300 bariatric surgical procedures with excellent results at par with World's best centres
  • Established a dedicated Bariatric Surgery Clinic at AIIMS. Since its establishment thousands of new obese patients have been registered and counselled for weight loss surgery.
  • Instrumental in establishing the 2-year Bariatric Fellowship Program at AIIMS for proper training of surgeons which would help in capacity building
  • Helped start similar programs in other public hospitals in the country and mentored the surgeons at AIIMS Bhatinda, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Lok Nayak Jai Prakash (LNJP) hospital and Lady Hardinge Medical College (LHMC), New Delhi and help them start bariatric surgery in their hospitals.
  • First one to perform bariatric surgery in Bihar at the invitation of the Bihar Chapter of the Association of Surgeons of India (ASI) and hence kick start the program in Bihar.
  • Recognized internationally as an expert in this field. Invited to be Section –editor of an international book authored by the World's leading experts on Bariatric Surgery titled “Obesity, Bariatric and Metabolic Surgery: A Practical Guide”. Contributed a chapter on the Technique of Laparoscopic Sleeve Gastrectomy (LSG), the most popular bariatric surgical procedure.
  • Member of various Expert committees and meetings to develop guidelines for issues related to Bariatric Surgery in India. Nominated member of the executive committee of Obesity and Metabolic Surgery Society of India (OSSI) for a period of three years. Frequently quoted in the national media-both print and electronic. Has been invited as an expert on Doordarshan health shows several times.
  • Convenor for Bariatric Surgery Fellowship of National Board of Examinations
  • Delivered more than 150 invited lectures related to Bariatric Surgery as well as MAS
  • Founder President of the “Foundation for Obesity Research and Metabolic Surgery” (FORMS) - a non-profit non-governmental society registered under the Societies Act for creating awareness and education about Bariatric surgery
  • Organized several workshops and meetings to spread knowledge and skills including Cadaver Courses on Bariatric surgery. Organizing Chairman of the First National Postgraduate CME on Bariatric Surgery held at AIIMS in year 2017 which focused on postgraduate students to fill the gap in medical curriculum.
  • Other Achievements
  • Editor, Journal of Minimal Access Surgery (JMAS), a PubMed indexed journal
  • Member Editorial Board of the prestigious journal- ‘Obesity Surgery’
  • Associate Editor, Journal of Bariatric Surgery
  • Chairman of the Scientific Committee of Obesity & Metabolic Surgery Society of India (OSSI)
  • Past Member of Institutional Ethics Committee (IEC) for Post Graduate Research, AIIMS
  • Past Member of the IEC Sub-committee for Serious Adverse Events (SAE)
  • Member of the SAGES-MIRA Expert Group Meeting for Framing Guidelines for Use of Robots in Surgery held in New York, USA in 2006
  • Section Editor of Section on Laparoscopic Sleeve Gastrectomy In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: First Edition, Publisher: Springer.
  • Co-Chairman of the Expert Group to frame National Guidelines for the Surgical Treatment of Obstructive Sleep Apnea
  • Ex Board member of the Society of Endoscopic and Laparoscopic Surgery of India (SELSI)
  • Member of the committee to finalize rules and package for Bariatric Surgery for CGHS patients, Ministry of Health, GOI

    • Talks & Publications

  • List of Important Publications (Full Papers)
  • For complete list
  • Pubmed:Click Here
  • ORCID: Click Here
  • Chapter in Books
  • Sandeep Aggarwal, Mehul Gupta, Vitish Singla, Michel Gagner. LSG: The Tech-nique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: Second Edition, Publisher: Springer, Editor: Sanjay Agrawal
  • Sandeep Aggarwal, Vitish Singla. Current Status of One Anastomosis Gastric By-pass. Chapter 12 in IAGES Recent Advances in Minimal Access Surgery 2, Edition: Second, Publisher: Jaypee Brothers. Editor: Subhash Khanna
  • Sandeep Aggarwal, Vitish Singla, Devender Singh, Amit Bhambri, Prasanna Rama-na. GI Complications in Bariatric Surgery in Management of Nutritional and Meta-bolic Complications of Bariatric Surgery. Publisher: Springer Nature. Editors: Aparna Govil Bhasker, Nimisha Kantharia
  • Sandeep Aggarwal, Pratyusha Priyadarshini, Michel Gagner. LSG: The Technique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edi-tion: First Edition, Publisher: Springer, Editors: Sanjay Agrawal, pp.247-57 . DOI: 10.1007/978-3-319-04343-2
  • Sandeep Aggarwal · Pratyusha Priyadarshini · Sanjay Agrawal. Current Concepts in Bariatric Surgery: A Review. Chapter in GI Surgery Annual. Editor: T K Chatto-padhay. pp 2016
  • Harshit Garg, Sandeep Aggarwal. Bariatric Surgery: Current Concepts in Roshan Lall Gupta's Recent Advances in Surgery – 14, Publisher: Jaypee, Editor: Puneet, pp: 217-236, · Chapter · Nov 2015
  • Full papers in Indexed Journals
  • Singh, B., Saikaustubh, Y., Singla, V. et al. One Anastomosis Gastric Bypass (OAGB) vs Roux en Y Gastric Bypass (RYGB) for Remission of T2DM in Patients with Morbid Obesity: a Randomized Controlled Trial. OBES SURG 33, 1218–1227 (2023). https://doi.org/10.1007/s11695-023-06515-4
  • Umang Arora1 Sagnik Biswas1 Sandeep Aggarwal1 Ajay Duseja2,* Shalimar1,* MASLD screening and diagnostic algorithms are interchangeable with existing NAFLD literature. Journal of Hepatology, February 2024. vol. 80 j e51–e91.
  • Sai Divya Yadavalli, Arun Kumar, MS, MCh, Vitish Singla, MS, MCh, Venu Madhav Jarapala, MBBS, MS, Vineet Ahuja, MD, DM, Surabhi Vyas, MD, DNB, and Sandeep Aggarwal, MS, FACS. Incidence of Barrett's Esophagus Following Sleeve Gastrectomy in Southeast Asian Population. Journal of Laparoendoscopic & Advanced Surgical Techniques. 2024;34(2):127-34
  • Sachan A, Aggarwal S, Pol MM, Singh A, Yadav R. Expression analysis of MMP14: Key enzyme action in modulating visceral adipose tissue plasticity in patients with obesity. Clinical Obesity. 2023;13(5):e12607. doi:10.1111/cob.12607
  • Elhence A, Anand A, Biswas S, Vaishnav M, Yadav R, Das P, ---- Agarwal S, etal. Compensated Advanced Chronic Liver Disease in Nonalcoholic Fatty Liver Disease: Two-Step Strategy is Better than Baveno Criteria. Dig Dis Sci 2023; 68:1016–1025
  • Umang Arora, Ritik M Goyal, Levin K J The-----Sandeep Aggarwal, Narendra Choudhary, Prajna Anirvan, Shivaram P Singh, Arka De, Ajay Duseja, Shalimar. Poor Performance of Non-Invasive Tests for Advanced Fibrosis in Nonalcoholic Fatty Liver Disease: A Multicentric Asian Study. Dig Dis Sci 2023; 68: 4485–4498.
  • Kumar A, Madhav JV, Singla V, Monga S, Aggarwal S. Concomitant Hiatal Hernia Repair With Sleeve Gastrectomy: Impact on Gastroesophageal Reflux? Surg Laparosc Endosc Percutan Tech. 2023 Oct 1;33(5):435-439. doi: 10.1097/SLE.0000000000001216. PMID: 37671614.
  • Singla V, Gupta A, Gupta A, Monga S, Kumar A, Chekuri R, Gupta M, Kashyap L, Shalimar, Aggarwal S. Outcomes of Laparoscopic Sleeve Gastrectomy (LSG) vs One-Anastomosis Gastric Bypass (OAGB) in Patients with Super-Super Obesity (BMI ≥ 60 kg/m2). Obes Surg. 2023 Nov 24. doi: 10.1007/s11695-023-06960-1.
  • Bhasker, Aparna Govil; Tantia, Om1; Khaitan, Manish2; Wadhawan, Randeep3; Kular, K. S.4; Baig, Sarfaraz Jalil5; Shah, Sumeet6; ---------Aggarwal, Sandeep17; et al. A Delphi Consensus on the Surgical Technique of Laparoscopic Sleeve Gastrectomy: An Obesity and Metabolic Surgery Society of India Initiative. Journal of Bariatric Surgery 2(2):p 79-84, May–Aug 2023. | DOI: 10.4103/jbs.jbs_7_23
  • Gupta, M., Singla, V., Kumar, A. et al. Response to Letter to the Editor: Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic Review and Meta-analysis. OBES SURG. 2023; 33:372–373
  • Gupta M, Singla V, Kumar A, Chekuri R, Kaustubh YS, Aggarwal S. Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic review and Meta-analysis. Obes Surg. 2022 Aug;32(8):2744-2752
  • Omar I, Miller K, Madhok B, Amr B, Singhal R, Graham Y, Pouwels S, Abu Hilal M, Aggarwal S, et al. The first international Delphi consensus statement on Laparoscopic Gastrointestinal surgery. Int J Surg. 2022 Aug;104:106766. doi: 10.1016/j.ijsu.2022.106766. Epub 2022 Jul 13. PubMed PMID: 35842089.
  • Singla V, Kumar A, Gupta M, Manohar M, Monga S, Agarwal S, Sharma AK, Aggarwal S. Gastrointestinal Quality of Life in Morbidly Obese Patients Undergoing One Anastomosis Gastric Bypass (OAGB): Derivation of a ""Mini GIQLI"" Score. Obes Surg. 2022 Jul;32(7):2332-2340.
  • Arumugaswamy PR, Singla V, Singh P, Kumar R, Aggarwal S. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surg Endosc. 2022 Jul;36(7):4771-4779
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, Angrisani L, Badiuddin FM, Balibrea JM, Bashir A, Behrens E, Bhatia K, Biertho L, Biter LU, Dargent J, De Luca M, DeMaria E, Elfawal MH, Fried M, Gawdat KA, Graham Y, Herrera MF, Himpens JM, Hussain FA, Kasama K, Kerrigan D, Kow L, Kristinsson J, Kurian M, Liem R, Lutfi RE, Menon V, Miller K, Noel P, Ospanov O, Ozmen MM, Peterli R, Ponce J, Prager G, Prasad A, Raj PP, Rodriguez NR, Rosenthal R, Sakran N, Santos JN, Shabbir A, Shikora SA, Small PK, Taylor CJ, Wang C, Weiner RA, Wylezol M, Yang W, Aminian A. The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Dec;35(12):7027-7033. doi: 10.1007/s00464-020-08216-w. Epub 2021 Jan 12. PubMed PMID: 33433676.
  • Kaul A, Kumar A, Baksi A, Singla V, Aggarwal S, Gulati G, Narang R, Kashyap L. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc. 2021 Nov;35(11):6006-6012. doi: 10.1007/s00464-020-08088-0. Epub 2020 Oct 13. PubMed PMID: 33048234.
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2021 Oct-Dec;17(4):462-469. doi: 10.4103/jmas.JMAS_19_20. PubMed PMID: 32964893; PubMed Central PMCID: PMC8486063.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2021 Jul-Sep;17(3):322-328. doi: 10.4103/jmas.JMAS_167_19. PubMed PMID: 32964884; PubMed Central PMCID: PMC8270047.
  • Bhambri A, Singla V, Kaul A, Shalimar, Kashyap L, Aggarwal S. Surgical management of super-super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian J Endosc Surg. 2021 Jul;14(3):570-573. doi: 10.1111/ases.12882. Epub 2020 Oct 22. PubMed PMID: 33094552.
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2021 May;36(5):1309-1316. doi: 10.1111/jgh.15358. Epub 2020 Dec 16. PubMed PMID: 33232525.1.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 May;31(5):2344-2345. doi: 10.1007/s11695-020-05162-3. Epub 2021 Jan 19.
  • Thakkar H, Vincent V, Shukla S, Sra M, Kanga U, Aggarwal S, Singh A. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr. 2021 Apr 17;13(1):46. doi: 10.1186/s13098-021-00662-3.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, Bindal V, Katakwar A, Vennapusa A, Bhasker AG, Peters A, Goel D, Bedi D, Palep J, Kona L, Mehrotra M, Baijal M, Bhandari M, Dukkipati N, Wadhawan R, Baig S, Pattanshetti S, Ugale S. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PubMed PMID: 32964881;
  • Singh, D., Baksi, A., Ramana, P. et al. Five-Year Outcomes of Sleeve Gastrectomy in Patients with Class I Obesity and Type 2 Diabetes Mellitus. OBES SURG (2021).
  • Prasanna Ramana Arumugaswamy, Vitish Singla, · Prabhjot Singh, Rajeev Kumar, Sandeep Aggarwal. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surgical Endoscopy (2021) https://doi.org/10.1007/s00464-021-08818-y
  • Mózes FE, Lee JA, Selvaraj EA,-------- Aggarwal S, ---- et al. Diagnostic accuracy of non-invasive tests for advanced fibrosis in patients with NAFLD: an individual patient data meta-analysis. Gut 2021 Epub ahead of print: doi:10.1136/gutjnl-2021-324243
  • Baksi, A., Aggarwal, S. Reply to: Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. OBES SURG (2021). https://doi.org/10.1007/s11695-021-05490-y
  • Mukti Sharma, Sandeep Aggarwal, Umakant Nayar, Naval Kishore Vikram, Anoop Misra, Kalpana Luthra. Differential expression of insulin receptor substrate-1(IRS-1) in visceral and subcutaneous adipose depots of morbidly obese subjects undergoing bariatric surgery in a tertiary care center in north India; SNP analysis and correlation with metabolic profile. Diabetes & Metabolic Syndrome: Clinical Research & Reviews. 2021;15(3). 981-986 ISSN 1871-4021, https://doi.org/10.1016/j.dsx.2021.04.014.
  • 29. Thakkar, H., Vincent, V., Sukhla, S---- Aggarwal S -- et al. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr 13, 46 (2021). https://doi.org/10.1186/s13098-021-00662-3
  • Jain S, Baksi A, Kumar A, Aggarwal S. Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. Obes Surg. 2021 Mar 10. doi: 10.1007/s11695-021-05322-z. Epub ahead of print. PMID: 33694055.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 Jan 19. doi: 10.1007/s11695-020-05162-3. Epub ahead of print. PMID: 33469860.
  • Petroff D, Blank V, Newsome PN, Shalimar, Voican CS, Thiele M, -------, Aggarwal S, et al. Assessment of hepatic steatosis by controlled attenuation parameter using the M and XL probes: an individual patient data meta-analysis. Lancet Gastroenterol Hepatol. 2021 Jan 15:S2468-1253(20)30357-5. doi: 10.1016/S2468-1253(20)30357-5. Epub ahead of print. PMID: 33460567.
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, et al The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Jan 12. doi: 10.1007/s00464-020-08216-w. Epub ahead of print. PMID: 33433676.
  • Agarwal L, Sahu AK, Baksi A, Agarwal A, Aggarwal S, Safety of Metabolic and Bariatric Surgery in Obese Patients with Liver Cirrhosis: A Systematic Review and Meta-analysis, Surgery for Obesity and Related Diseases (2020), doi: https://doi.org/10.1016/j.soard.2020.11.004
  • Sachan A, Singh A, Shukla S, Aggarwal S, Mir I, Yadav R. Serum Adipocytokines Levels and Their Association with Insulin Sensitivity in Morbidly Obese Individuals Undergoing Bariatric Surgery. J Obes Metab Syndr. 2020 Dec 30;29(4):303-312. doi: 10.7570/jomes20090. PMID: 33380577; PMCID: PMC7789018.
  • Kaul, A., Kumar, A., Baksi, A. Aggarwal S. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc (2020). https://doi.org/10.1007/s00464-020-08088-0
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2020 Nov 24;. doi: 10.1111/jgh.15358. [Epub ahead of print] PubMed PMID: 33232525.
  • Amit Bhambri, Vitish Singla, Aashir Kaul, Shalimar, Lokesh Kashyap, Sandeep Aggarwal. Surgical management of super‐super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian Journal of Endoscopic Surgery. First published: 22 October 2020
  • https://doi.org/10.1111/ases.12882
  • Aggarwal, S., Baksi, A. & Kamtam, D.N.H. Reply to: Incidence of Marginal Ulcers After Gastric Bypass Seems to Be Inversely Related to the Duration of Prophylaxis with Proton Pump Inhibitors. OBES SURG (2020). https://doi.org/10.1007/s11695-020-05051-9
  • Agarwal, L., Aggarwal, S., Shalimar et al. Bariatric Surgery in Nonalcoholic Fatty Liver Disease (NAFLD): Impact Assessment Using Paired Liver Biopsy and Fibroscan. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04977-4
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2020 Sep 19. doi: 10.4103/jmas.JMAS_19_20. Epub ahead of print. PMID: 32964893.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2020 Sep 12. doi: 10.4103/jmas.JMAS_167_19. Epub ahead of print. PMID: 32964884.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, et al. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PMID: 32964881.
  • Singla V, Aggarwal S, Aggarwal S, Gupta M, Singh D. Correlation of weight loss with residual gastric volume on computerized tomography in patients undergoing sleeve gastrectomy: A systematic review. Clin Obes. 2020 Oct;10(5):e12394. doi: 10.1111/cob.12394. Epub 2020 Aug 7. PMID: 32767720.
  • Yadav R, Aggarwal S, Singh A. SARS-CoV-2-host dynamics: Increased risk of adverse outcomes of COVID-19 in obesity. Diabetes Metab Syndr. 2020 Sep-Oct;14(5):1355-1360. doi: 10.1016/j.dsx.2020.07.030. Epub 2020 Jul 21. PMID: 32755835; PMCID: PMC7372253.
  • Pouwels S, Omar I, Aggarwal S, Aminian A, Angrisani L, Balibrea JM, et al. The First Modified Delphi Consensus Statement for Resuming Bariatric and Metabolic Surgery in the COVID-19 Times. Obes Surg. 2020 Aug 1:1–6. doi: 10.1007/s11695-020-04883-9. Epub ahead of print. PMID: 32740826; PMCID: PMC7395568
  • Baksi A, Kamtam DNH, Aggarwal S, Ahuja V, Kashyap L, Shende DR. Should Surveillance Endoscopy Be Routine After One Anastomosis Gastric Bypass to Detect Marginal Ulcers: Initial Outcomes in a Tertiary Referral Centre. Obes Surg. 2020 Jul 27. doi: 10.1007/s11695-020-04864-y. Epub ahead of print. PMID: 32720263.
  • Kaul, A., Singla, V., Baksi, A. et al. Safety and Efficacy of Bariatric Surgery in Advanced Liver Fibrosis. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04827-3
  • Aggarwal, S., Mahawar, K., Khaitan, M. et al. Obesity and Metabolic Surgery Society of India (OSSI) Recommendations for Bariatric and Metabolic Surgery Practice During the COVID-19 Pandemic. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04940-
  • Khan WA, Singla V, Aggarwal S, Gupta Y. Outcome of Bariatric Surgery on Hypothyroidism: Experience from a Tertiary Care Centre in India. April 2020. Surgery for Obesity and Related Diseases. DOI: 10.1016/j.soard.2020.03.035
  • Singh D, Arumalla K, Aggarwal S, Singla V, Ganie A, Malhotra N. Impact of Bariatric Surgery on Clinical, Biochemical, and Hormonal Parameters in Women with Polycystic Ovary Syndrome (PCOS). Obes Surg. 2020 Jun;30(6):2294-2300. doi: 10.1007/s11695-020-04487-3. PubMed PMID: 32088855.
  • Shalimar, Kumar R, Rout G, Kumar R, Yadav R, Das P, Aggarwal S, Gunjan D, Saraya A, Nayak B. Body mass index-based controlled attenuation parameter cut-offs for assessment of hepatic steatosis in non-alcoholic fatty liver disease. Indian J Gastroenterol. 2020 Feb;39(1):32-41. doi: 10.1007/s12664-019-00991-2. Epub 2020 Mar 17. PubMed PMID: 32185692.
  • Singla V, Aggarwal S, Singh B, Tharun G, Katiyar V, Bhambri A. Outcomes in Super Obese Patients Undergoing One Anastomosis Gastric Bypass or Laparoscopic Sleeve Gastrectomy. Obes Surg. 2019 Apr;29(4):1242-1247. doi: 10.1007/s11695-018-03673-8. PubMed PMID: 30656569.
  • Singla V, Gattu T, Aggarwal S, Bhambri A, Agarwal S. Evaluation of Epworth Sleepiness Scale to Predict Obstructive Sleep Apnea in Morbidly Obese Patients and Increasing Its Utility. J Laparoendosc Adv Surg Tech A. 2019 Mar;29(3):298-302. doi: 10.1089/lap.2018.0329. Epub 2018 Aug 15. PubMed PMID: 30109974. Vincent V, Thakkar H, Aggarwal S, Mridha AR, Ramakrishnan L, Singh A. ATP-binding cassette transporter A1 (ABCA1) expression in adipose tissue and its modulation with insulin resistance in obesity. Diabetes Metab Syndr Obes. 2019;12:275-284. doi: 10.2147/DMSO.S186565. eCollection 2019. PubMed PMID: 30881070; PubMed Central PMCID: PMC6395069.
  • Aggarwal S, Bhambri A, Singla V, Dash NR, Sharma A. Adenocarcinoma of oesophagus involving gastro-oesophageal junction following mini-gastric bypass/one anastomosis gastric bypass. J Minim Access Surg. 2019 Feb 18;. doi: 10.4103/jmas.JMAS_320_18. [Epub ahead of print] PubMed PMID: 30777997; PubMed Central PMCID: PMC7176000.
  • Arumalla K, Singla V, Aggarwal S, Garg H, Goel R, Katiyar V. Outcomes in morbidly obese adolescent patients undergoing laparoscopic sleeve gastrectomy in the Indian subcontinent: A retrospective review. J Minim Access Surg. 2019 Jan-Mar;15(1):31-36. doi: 10.4103/jmas.JMAS_143_17. PubMed PMID: 29483370; PubMed Central PMCID: PMC6293674.
  • 58. Singla V, Aggarwal S, Garg H, Kashyap L, Shende DR, Agarwal S. Outcomes in Super Obese Patients Undergoing Laparoscopic Sleeve Gastrectomy. J Laparoendosc Adv Surg Tech A. 2018 Mar;28(3):256-262. doi: 10.1089/lap.2017.0536. Epub 2017 Nov 3. PubMed PMID: 29099314.
  • 59. Garg H, Aggarwal S, Shalimar, Yadav R, Datta Gupta S, Agarwal L, Agarwal S. Utility of transient elastography (fibroscan) and impact of bariatric surgery on nonalcoholic fatty liver disease (NAFLD) in morbidly obese patients. Surg Obes Relat Dis. 2018 Jan;14(1):81-91. doi: 10.1016/j.soard.2017.09.005. Epub 2017 Sep 11. PubMed PMID: 29126863.
  • 60. Garg H, Aggarwal S, Misra MC, Priyadarshini P, Swami A, Kashyap L, Jaiswal R. Mid to long term outcomes of Laparoscopic Sleeve Gastrectomy in Indian population: 3-7 year results - A retrospective cohort study. Int J Surg. 2017 Dec;48:201-209. doi: 10.1016/j.ijsu.2017.10.076. Epub 2017 Nov 6. PubMed PMID: 29122706.
  • Priyadarshini P, Singh VP, Aggarwal S, Garg H, Sinha S, Guleria R. Impact of bariatric surgery on obstructive sleep apnoea-hypopnea syndrome in morbidly obese patients. J Minim Access Surg. 2017 Oct-Dec;13(4):291-295. doi: 10.4103/jmas.JMAS_5_17. PubMed PMID: 28872099; PubMed Central PMCID: PMC5607797.
  • Garg H, Priyadarshini P, Aggarwal S, Agarwal S, Chaudhary R. Comparative study of outcomes following laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy in morbidly obese patients: A case control study. World J Gastrointest Endosc. 2017 Apr 16;9(4):162-170. doi: 10.4253/wjge.v9.i4.162. PubMed PMID: 28465782; PubMed Central PMCID: PMC5394722.
  • Garg H, Vigneshwaran B, Aggarwal S, Ahuja V. Impact of concomitant laparoscopic sleeve gastrectomy and hiatal hernia repair on gastro-oesophageal reflux disease in morbidly obese patients. J Minim Access Surg. 2017 Apr-Jun;13(2):103-108. doi: 10.4103/0972-9941.201730. PubMed PMID: 28281472; PubMed Central PMCID: PMC5363114.
  • Vigneshwaran B, Wahal A, Aggarwal S, Priyadarshini P, Bhattacharjee H, Khadgawat R, Yadav R. Impact of Sleeve Gastrectomy on Type 2 Diabetes Mellitus, Gastric Emptying Time, Glucagon-Like Peptide 1 (GLP-1), Ghrelin and Leptin in Non-morbidly Obese Subjects with BMI 30-35.0 kg/m2: a Prospective Study. Obes Surg. 2016 Dec;26(12):2817-2823. doi: 10.1007/s11695-016-2226-9. PubMed PMID: 27185177.
  • Sharma SK, Katoch VM, Mohan A, Kadhiravan T, Elavarasi A, Ragesh R, Nischal N, Sethi P, Behera D, Bhatia M, Ghoshal AG, Gothi D, Joshi J, Kanwar MS, Kharbanda OP, Kumar S, Mohapatra PR, Mallick BN, Mehta R, Prasad R, Sharma SC, Sikka K, Aggarwal S, Shukla G, Suri JC, Vengamma B, Grover A, Vijayan VK, Ramakrishnan N, Gupta R. Consensus and evidence-based Indian initiative on obstructive sleep apnea guidelines 2014 (first edition). Lung India. 2015 Jul-Aug;32(4):422-34. doi: 10.4103/0970-2113.159677. PubMed PMID: 26180408; PubMed Central PMCID: PMC4502224.
  • Mahawar KK, Aggarwal S, Carr WR, Jennings N, Balupuri S, Small PK. Consensus statements and bariatric surgery. Obes Surg. 2015 Jun;25(6):1063-5. doi: 10.1007/s11695-015-1606-x. PubMed PMID: 25680578.
  • Aggarwal S, Sharma AP, Kumar R, Anand S. Totally Robotic Roux-en-Y Gastric Bypass: Technique. Indian J Surg. 2015 Apr;77(2):164-6. doi: 10.1007/s12262-013-0948-7. Epub 2013 Jul 20. PubMed PMID: 26139977; PubMed Central PMCID: PMC4484530.
  • Aggarwal S, Modi S, Jose T. Laparoscopic sleeve gastrectomy leads to reduction in thyroxine requirement in morbidly obese patients with hypothyroidism. World J Surg. 2014 Oct;38(10):2628-31. doi: 10.1007/s00268-014-2646-4. PubMed PMID: 24844659.
  • Aggarwal S, Uniyal M. Bariatric surgery: An overview. Natl Med J India. 2014 Sep-Oct;27(5):261-6. Review. PubMed PMID: 26037426.
  • Sharma A, Aggarwal S, Ahuja V, Bal C. Evaluation of gastroesophageal reflux before and after sleeve gastrectomy using symptom scoring, scintigraphy, and endoscopy. Surg Obes Relat Dis. 2014 Jul-Aug;10(4):600-5. doi: 10.1016/j.soard.2014.01.017. Epub 2014 Jan 28. PubMed PMID: 24837563.
  • Aggarwal S, Sharma AP, Ramaswamy N. Outcome of laparoscopic sleeve gastrectomy with and without staple line oversewing in morbidly obese patients: a randomized study. J Laparoendosc Adv Surg Tech A. 2013 Nov;23(11):895-9. doi: 10.1089/lap.2013.0137. Epub 2013 Sep 28. PubMed PMID: 24073838.
  • Aggarwal S, Bhattacharjee H, Chander Misra M. Practice of routine intraoperative leak test during laparoscopic sleeve gastrectomy should not be discarded. Surg Obes Relat Dis. 2011 Sep-Oct;7(5):e24-5. doi: 10.1016/j.soard.2011.03.013. Epub 2011 Apr 15. PubMed PMID: 21616724.
  • Misra A, Chowbey P, Makkar BM, Vikram NK, Wasir JS, Chadha D, Joshi SR, Sadikot S, Gupta R, Gulati S, Munjal YP. Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians and recommendations for physical activity, medical and surgical management. J Assoc Physicians India. 2009 Feb;57:163-70. Review. PubMed PMID: 19582986.
  • Aggarwal S, Kini SU, Herron DM. Laparoscopic sleeve gastrectomy for morbid obesity: a review. Surg Obes Relat Dis. 2007 Mar-Apr;3(2):189-94. doi: 10.1016/j.soard.2006.10.013. Review. PubMed PMID: 17386400.

    Languages Spoken

  • English
  • Hindi

    • Overview

  • Dr. Sandeep Aggarwal attended medical school at All India Institute of Medical Sciences (AIIMS), New Delhi and completed his Masters in Surgery (MS) followed by Senior- Residency from AIIMS. He also completed a 1-year Research fellowship at Mount Sinai School of Medicine in New York, USA and a 4 month period at Homerton University, London, UK as a Commonwealth Fellow where he was trained in Bariatric Surgery. He has been a Faculty member in the Department of Surgical Disciplines at AIIMS since 1999 and was head of Surgery Unit II till June 2024. He is the foremost Bariatric Surgeon in Delhi. 

  • Dr. Sandeep is a renowned Laparoscopic, Bariatric, GI and Renal Transplant Surgeon in Delhi with more than 30 years of surgical experience. He is the chairman of the Institute of Bariatric, Minimal Access, GI and Robotic Surgery. Dr. Sandeep is widely recognized as a global leader in the field of Bariatric surgery having pioneered and nurtured this specialty in the public sector in India through his excellent clinical and research work in this field. He has performed more than 1300 bariatric surgery procedures, more than 400 renal transplants and more than 10000 laparoscopic surgical procedures including complex GI surgical procedures, adrenalectomy, splenectomy, hernias etc. 

  • Dr. Sandeep is an active researcher with more than 140 publications and several book chapters to his credit. He is a dedicated teacher, has trained several residents and fellows, performed live surgery at several workshops and has delivered more than 200 invited lectures at various national and international conferences. Dr. Sandeep holds editorial positions in several reputed journals including Editor of Journal of Minimal Access Surgery (JMAS). He has been invited as an expert on several Doordarshan health programs and is frequently quoted in media (both print and electronic) on bariatric surgery topics. Dr. Sandeep has been a Convenor/member of several expert committees. He was awarded the Best Researcher Award by the Indian Association of Gastrointestinal Endo Surgeons (IAGES) in the year 2020.

    • Fellowship & Membership

  • Commonwealth Fellow
  • Fellowship of American College of Surgeons (FACS)
  • Fellowship of International College of Laparoscopic Surgeons (FCLS)
  • Fellowship of International Union Against Cancer (UICC)
  • Research Fellow in Division of Laparoscopic Surgery; Mount Sinai School of Medicine, New York, USA. (Dec 2005-Dec 2006)

    • Field of Expertise

  • Bariatric Surgery
  • Hernia Surgery
  • Laparoscopic Upper GI Surgery
  • Solid Organ including Laparoscopic Splenectomy And Adrenalectomy
  • Renal Transplantation

    • Awards & Achievements

  • Best Researcher Award” of the Indian Association of Gastrointestinal Endoscopic Surgeons (IAGES) for the year 2020
  • Obesity Surgery Editors Recognition Award for Distinction in Reviewing 2020
  • Certificate for Commendation at AIIMS Excellence Research Award; Awarded at 3rd AIIMS Research Day held on 30th January 2024
  • Pioneered this speciality of surgery in the government sector in the year 2008. Established and nurtured the specialty of Bariatric Surgery in the Country.
  • Have performed more than 1300 bariatric surgical procedures with excellent results at par with World's best centres
  • Established a dedicated Bariatric Surgery Clinic at AIIMS. Since its establishment thousands of new obese patients have been registered and counselled for weight loss surgery.
  • Instrumental in establishing the 2-year Bariatric Fellowship Program at AIIMS for proper training of surgeons which would help in capacity building
  • Helped start similar programs in other public hospitals in the country and mentored the surgeons at AIIMS Bhatinda, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Lok Nayak Jai Prakash (LNJP) hospital and Lady Hardinge Medical College (LHMC), New Delhi and help them start bariatric surgery in their hospitals.
  • First one to perform bariatric surgery in Bihar at the invitation of the Bihar Chapter of the Association of Surgeons of India (ASI) and hence kick start the program in Bihar.
  • Recognized internationally as an expert in this field. Invited to be Section –editor of an international book authored by the World's leading experts on Bariatric Surgery titled “Obesity, Bariatric and Metabolic Surgery: A Practical Guide”. Contributed a chapter on the Technique of Laparoscopic Sleeve Gastrectomy (LSG), the most popular bariatric surgical procedure.
  • Member of various Expert committees and meetings to develop guidelines for issues related to Bariatric Surgery in India. Nominated member of the executive committee of Obesity and Metabolic Surgery Society of India (OSSI) for a period of three years. Frequently quoted in the national media-both print and electronic. Has been invited as an expert on Doordarshan health shows several times.
  • Convenor for Bariatric Surgery Fellowship of National Board of Examinations
  • Delivered more than 150 invited lectures related to Bariatric Surgery as well as MAS
  • Founder President of the “Foundation for Obesity Research and Metabolic Surgery” (FORMS) - a non-profit non-governmental society registered under the Societies Act for creating awareness and education about Bariatric surgery
  • Organized several workshops and meetings to spread knowledge and skills including Cadaver Courses on Bariatric surgery. Organizing Chairman of the First National Postgraduate CME on Bariatric Surgery held at AIIMS in year 2017 which focused on postgraduate students to fill the gap in medical curriculum.
  • Other Achievements
  • Editor, Journal of Minimal Access Surgery (JMAS), a PubMed indexed journal
  • Member Editorial Board of the prestigious journal- ‘Obesity Surgery’
  • Associate Editor, Journal of Bariatric Surgery
  • Chairman of the Scientific Committee of Obesity & Metabolic Surgery Society of India (OSSI)
  • Past Member of Institutional Ethics Committee (IEC) for Post Graduate Research, AIIMS
  • Past Member of the IEC Sub-committee for Serious Adverse Events (SAE)
  • Member of the SAGES-MIRA Expert Group Meeting for Framing Guidelines for Use of Robots in Surgery held in New York, USA in 2006
  • Section Editor of Section on Laparoscopic Sleeve Gastrectomy In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: First Edition, Publisher: Springer.
  • Co-Chairman of the Expert Group to frame National Guidelines for the Surgical Treatment of Obstructive Sleep Apnea
  • Ex Board member of the Society of Endoscopic and Laparoscopic Surgery of India (SELSI)
  • Member of the committee to finalize rules and package for Bariatric Surgery for CGHS patients, Ministry of Health, GOI

    • Talks & Publications

  • List of Important Publications (Full Papers)
  • For complete list
  • Pubmed:Click Here
  • ORCID: Click Here
  • Chapter in Books
  • Sandeep Aggarwal, Mehul Gupta, Vitish Singla, Michel Gagner. LSG: The Tech-nique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: Second Edition, Publisher: Springer, Editor: Sanjay Agrawal
  • Sandeep Aggarwal, Vitish Singla. Current Status of One Anastomosis Gastric By-pass. Chapter 12 in IAGES Recent Advances in Minimal Access Surgery 2, Edition: Second, Publisher: Jaypee Brothers. Editor: Subhash Khanna
  • Sandeep Aggarwal, Vitish Singla, Devender Singh, Amit Bhambri, Prasanna Rama-na. GI Complications in Bariatric Surgery in Management of Nutritional and Meta-bolic Complications of Bariatric Surgery. Publisher: Springer Nature. Editors: Aparna Govil Bhasker, Nimisha Kantharia
  • Sandeep Aggarwal, Pratyusha Priyadarshini, Michel Gagner. LSG: The Technique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edi-tion: First Edition, Publisher: Springer, Editors: Sanjay Agrawal, pp.247-57 . DOI: 10.1007/978-3-319-04343-2
  • Sandeep Aggarwal · Pratyusha Priyadarshini · Sanjay Agrawal. Current Concepts in Bariatric Surgery: A Review. Chapter in GI Surgery Annual. Editor: T K Chatto-padhay. pp 2016
  • Harshit Garg, Sandeep Aggarwal. Bariatric Surgery: Current Concepts in Roshan Lall Gupta's Recent Advances in Surgery – 14, Publisher: Jaypee, Editor: Puneet, pp: 217-236, · Chapter · Nov 2015
  • Full papers in Indexed Journals
  • Singh, B., Saikaustubh, Y., Singla, V. et al. One Anastomosis Gastric Bypass (OAGB) vs Roux en Y Gastric Bypass (RYGB) for Remission of T2DM in Patients with Morbid Obesity: a Randomized Controlled Trial. OBES SURG 33, 1218–1227 (2023). https://doi.org/10.1007/s11695-023-06515-4
  • Umang Arora1 Sagnik Biswas1 Sandeep Aggarwal1 Ajay Duseja2,* Shalimar1,* MASLD screening and diagnostic algorithms are interchangeable with existing NAFLD literature. Journal of Hepatology, February 2024. vol. 80 j e51–e91.
  • Sai Divya Yadavalli, Arun Kumar, MS, MCh, Vitish Singla, MS, MCh, Venu Madhav Jarapala, MBBS, MS, Vineet Ahuja, MD, DM, Surabhi Vyas, MD, DNB, and Sandeep Aggarwal, MS, FACS. Incidence of Barrett's Esophagus Following Sleeve Gastrectomy in Southeast Asian Population. Journal of Laparoendoscopic & Advanced Surgical Techniques. 2024;34(2):127-34
  • Sachan A, Aggarwal S, Pol MM, Singh A, Yadav R. Expression analysis of MMP14: Key enzyme action in modulating visceral adipose tissue plasticity in patients with obesity. Clinical Obesity. 2023;13(5):e12607. doi:10.1111/cob.12607
  • Elhence A, Anand A, Biswas S, Vaishnav M, Yadav R, Das P, ---- Agarwal S, etal. Compensated Advanced Chronic Liver Disease in Nonalcoholic Fatty Liver Disease: Two-Step Strategy is Better than Baveno Criteria. Dig Dis Sci 2023; 68:1016–1025
  • Umang Arora, Ritik M Goyal, Levin K J The-----Sandeep Aggarwal, Narendra Choudhary, Prajna Anirvan, Shivaram P Singh, Arka De, Ajay Duseja, Shalimar. Poor Performance of Non-Invasive Tests for Advanced Fibrosis in Nonalcoholic Fatty Liver Disease: A Multicentric Asian Study. Dig Dis Sci 2023; 68: 4485–4498.
  • Kumar A, Madhav JV, Singla V, Monga S, Aggarwal S. Concomitant Hiatal Hernia Repair With Sleeve Gastrectomy: Impact on Gastroesophageal Reflux? Surg Laparosc Endosc Percutan Tech. 2023 Oct 1;33(5):435-439. doi: 10.1097/SLE.0000000000001216. PMID: 37671614.
  • Singla V, Gupta A, Gupta A, Monga S, Kumar A, Chekuri R, Gupta M, Kashyap L, Shalimar, Aggarwal S. Outcomes of Laparoscopic Sleeve Gastrectomy (LSG) vs One-Anastomosis Gastric Bypass (OAGB) in Patients with Super-Super Obesity (BMI ≥ 60 kg/m2). Obes Surg. 2023 Nov 24. doi: 10.1007/s11695-023-06960-1.
  • Bhasker, Aparna Govil; Tantia, Om1; Khaitan, Manish2; Wadhawan, Randeep3; Kular, K. S.4; Baig, Sarfaraz Jalil5; Shah, Sumeet6; ---------Aggarwal, Sandeep17; et al. A Delphi Consensus on the Surgical Technique of Laparoscopic Sleeve Gastrectomy: An Obesity and Metabolic Surgery Society of India Initiative. Journal of Bariatric Surgery 2(2):p 79-84, May–Aug 2023. | DOI: 10.4103/jbs.jbs_7_23
  • Gupta, M., Singla, V., Kumar, A. et al. Response to Letter to the Editor: Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic Review and Meta-analysis. OBES SURG. 2023; 33:372–373
  • Gupta M, Singla V, Kumar A, Chekuri R, Kaustubh YS, Aggarwal S. Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic review and Meta-analysis. Obes Surg. 2022 Aug;32(8):2744-2752
  • Omar I, Miller K, Madhok B, Amr B, Singhal R, Graham Y, Pouwels S, Abu Hilal M, Aggarwal S, et al. The first international Delphi consensus statement on Laparoscopic Gastrointestinal surgery. Int J Surg. 2022 Aug;104:106766. doi: 10.1016/j.ijsu.2022.106766. Epub 2022 Jul 13. PubMed PMID: 35842089.
  • Singla V, Kumar A, Gupta M, Manohar M, Monga S, Agarwal S, Sharma AK, Aggarwal S. Gastrointestinal Quality of Life in Morbidly Obese Patients Undergoing One Anastomosis Gastric Bypass (OAGB): Derivation of a ""Mini GIQLI"" Score. Obes Surg. 2022 Jul;32(7):2332-2340.
  • Arumugaswamy PR, Singla V, Singh P, Kumar R, Aggarwal S. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surg Endosc. 2022 Jul;36(7):4771-4779
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, Angrisani L, Badiuddin FM, Balibrea JM, Bashir A, Behrens E, Bhatia K, Biertho L, Biter LU, Dargent J, De Luca M, DeMaria E, Elfawal MH, Fried M, Gawdat KA, Graham Y, Herrera MF, Himpens JM, Hussain FA, Kasama K, Kerrigan D, Kow L, Kristinsson J, Kurian M, Liem R, Lutfi RE, Menon V, Miller K, Noel P, Ospanov O, Ozmen MM, Peterli R, Ponce J, Prager G, Prasad A, Raj PP, Rodriguez NR, Rosenthal R, Sakran N, Santos JN, Shabbir A, Shikora SA, Small PK, Taylor CJ, Wang C, Weiner RA, Wylezol M, Yang W, Aminian A. The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Dec;35(12):7027-7033. doi: 10.1007/s00464-020-08216-w. Epub 2021 Jan 12. PubMed PMID: 33433676.
  • Kaul A, Kumar A, Baksi A, Singla V, Aggarwal S, Gulati G, Narang R, Kashyap L. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc. 2021 Nov;35(11):6006-6012. doi: 10.1007/s00464-020-08088-0. Epub 2020 Oct 13. PubMed PMID: 33048234.
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2021 Oct-Dec;17(4):462-469. doi: 10.4103/jmas.JMAS_19_20. PubMed PMID: 32964893; PubMed Central PMCID: PMC8486063.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2021 Jul-Sep;17(3):322-328. doi: 10.4103/jmas.JMAS_167_19. PubMed PMID: 32964884; PubMed Central PMCID: PMC8270047.
  • Bhambri A, Singla V, Kaul A, Shalimar, Kashyap L, Aggarwal S. Surgical management of super-super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian J Endosc Surg. 2021 Jul;14(3):570-573. doi: 10.1111/ases.12882. Epub 2020 Oct 22. PubMed PMID: 33094552.
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2021 May;36(5):1309-1316. doi: 10.1111/jgh.15358. Epub 2020 Dec 16. PubMed PMID: 33232525.1.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 May;31(5):2344-2345. doi: 10.1007/s11695-020-05162-3. Epub 2021 Jan 19.
  • Thakkar H, Vincent V, Shukla S, Sra M, Kanga U, Aggarwal S, Singh A. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr. 2021 Apr 17;13(1):46. doi: 10.1186/s13098-021-00662-3.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, Bindal V, Katakwar A, Vennapusa A, Bhasker AG, Peters A, Goel D, Bedi D, Palep J, Kona L, Mehrotra M, Baijal M, Bhandari M, Dukkipati N, Wadhawan R, Baig S, Pattanshetti S, Ugale S. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PubMed PMID: 32964881;
  • Singh, D., Baksi, A., Ramana, P. et al. Five-Year Outcomes of Sleeve Gastrectomy in Patients with Class I Obesity and Type 2 Diabetes Mellitus. OBES SURG (2021).
  • Prasanna Ramana Arumugaswamy, Vitish Singla, · Prabhjot Singh, Rajeev Kumar, Sandeep Aggarwal. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surgical Endoscopy (2021) https://doi.org/10.1007/s00464-021-08818-y
  • Mózes FE, Lee JA, Selvaraj EA,-------- Aggarwal S, ---- et al. Diagnostic accuracy of non-invasive tests for advanced fibrosis in patients with NAFLD: an individual patient data meta-analysis. Gut 2021 Epub ahead of print: doi:10.1136/gutjnl-2021-324243
  • Baksi, A., Aggarwal, S. Reply to: Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. OBES SURG (2021). https://doi.org/10.1007/s11695-021-05490-y
  • Mukti Sharma, Sandeep Aggarwal, Umakant Nayar, Naval Kishore Vikram, Anoop Misra, Kalpana Luthra. Differential expression of insulin receptor substrate-1(IRS-1) in visceral and subcutaneous adipose depots of morbidly obese subjects undergoing bariatric surgery in a tertiary care center in north India; SNP analysis and correlation with metabolic profile. Diabetes & Metabolic Syndrome: Clinical Research & Reviews. 2021;15(3). 981-986 ISSN 1871-4021, https://doi.org/10.1016/j.dsx.2021.04.014.
  • 29. Thakkar, H., Vincent, V., Sukhla, S---- Aggarwal S -- et al. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr 13, 46 (2021). https://doi.org/10.1186/s13098-021-00662-3
  • Jain S, Baksi A, Kumar A, Aggarwal S. Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. Obes Surg. 2021 Mar 10. doi: 10.1007/s11695-021-05322-z. Epub ahead of print. PMID: 33694055.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 Jan 19. doi: 10.1007/s11695-020-05162-3. Epub ahead of print. PMID: 33469860.
  • Petroff D, Blank V, Newsome PN, Shalimar, Voican CS, Thiele M, -------, Aggarwal S, et al. Assessment of hepatic steatosis by controlled attenuation parameter using the M and XL probes: an individual patient data meta-analysis. Lancet Gastroenterol Hepatol. 2021 Jan 15:S2468-1253(20)30357-5. doi: 10.1016/S2468-1253(20)30357-5. Epub ahead of print. PMID: 33460567.
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, et al The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Jan 12. doi: 10.1007/s00464-020-08216-w. Epub ahead of print. PMID: 33433676.
  • Agarwal L, Sahu AK, Baksi A, Agarwal A, Aggarwal S, Safety of Metabolic and Bariatric Surgery in Obese Patients with Liver Cirrhosis: A Systematic Review and Meta-analysis, Surgery for Obesity and Related Diseases (2020), doi: https://doi.org/10.1016/j.soard.2020.11.004
  • Sachan A, Singh A, Shukla S, Aggarwal S, Mir I, Yadav R. Serum Adipocytokines Levels and Their Association with Insulin Sensitivity in Morbidly Obese Individuals Undergoing Bariatric Surgery. J Obes Metab Syndr. 2020 Dec 30;29(4):303-312. doi: 10.7570/jomes20090. PMID: 33380577; PMCID: PMC7789018.
  • Kaul, A., Kumar, A., Baksi, A. Aggarwal S. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc (2020). https://doi.org/10.1007/s00464-020-08088-0
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2020 Nov 24;. doi: 10.1111/jgh.15358. [Epub ahead of print] PubMed PMID: 33232525.
  • Amit Bhambri, Vitish Singla, Aashir Kaul, Shalimar, Lokesh Kashyap, Sandeep Aggarwal. Surgical management of super‐super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian Journal of Endoscopic Surgery. First published: 22 October 2020
  • https://doi.org/10.1111/ases.12882
  • Aggarwal, S., Baksi, A. & Kamtam, D.N.H. Reply to: Incidence of Marginal Ulcers After Gastric Bypass Seems to Be Inversely Related to the Duration of Prophylaxis with Proton Pump Inhibitors. OBES SURG (2020). https://doi.org/10.1007/s11695-020-05051-9
  • Agarwal, L., Aggarwal, S., Shalimar et al. Bariatric Surgery in Nonalcoholic Fatty Liver Disease (NAFLD): Impact Assessment Using Paired Liver Biopsy and Fibroscan. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04977-4
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2020 Sep 19. doi: 10.4103/jmas.JMAS_19_20. Epub ahead of print. PMID: 32964893.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2020 Sep 12. doi: 10.4103/jmas.JMAS_167_19. Epub ahead of print. PMID: 32964884.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, et al. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PMID: 32964881.
  • Singla V, Aggarwal S, Aggarwal S, Gupta M, Singh D. Correlation of weight loss with residual gastric volume on computerized tomography in patients undergoing sleeve gastrectomy: A systematic review. Clin Obes. 2020 Oct;10(5):e12394. doi: 10.1111/cob.12394. Epub 2020 Aug 7. PMID: 32767720.
  • Yadav R, Aggarwal S, Singh A. SARS-CoV-2-host dynamics: Increased risk of adverse outcomes of COVID-19 in obesity. Diabetes Metab Syndr. 2020 Sep-Oct;14(5):1355-1360. doi: 10.1016/j.dsx.2020.07.030. Epub 2020 Jul 21. PMID: 32755835; PMCID: PMC7372253.
  • Pouwels S, Omar I, Aggarwal S, Aminian A, Angrisani L, Balibrea JM, et al. The First Modified Delphi Consensus Statement for Resuming Bariatric and Metabolic Surgery in the COVID-19 Times. Obes Surg. 2020 Aug 1:1–6. doi: 10.1007/s11695-020-04883-9. Epub ahead of print. PMID: 32740826; PMCID: PMC7395568
  • Baksi A, Kamtam DNH, Aggarwal S, Ahuja V, Kashyap L, Shende DR. Should Surveillance Endoscopy Be Routine After One Anastomosis Gastric Bypass to Detect Marginal Ulcers: Initial Outcomes in a Tertiary Referral Centre. Obes Surg. 2020 Jul 27. doi: 10.1007/s11695-020-04864-y. Epub ahead of print. PMID: 32720263.
  • Kaul, A., Singla, V., Baksi, A. et al. Safety and Efficacy of Bariatric Surgery in Advanced Liver Fibrosis. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04827-3
  • Aggarwal, S., Mahawar, K., Khaitan, M. et al. Obesity and Metabolic Surgery Society of India (OSSI) Recommendations for Bariatric and Metabolic Surgery Practice During the COVID-19 Pandemic. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04940-
  • Khan WA, Singla V, Aggarwal S, Gupta Y. Outcome of Bariatric Surgery on Hypothyroidism: Experience from a Tertiary Care Centre in India. April 2020. Surgery for Obesity and Related Diseases. DOI: 10.1016/j.soard.2020.03.035
  • Singh D, Arumalla K, Aggarwal S, Singla V, Ganie A, Malhotra N. Impact of Bariatric Surgery on Clinical, Biochemical, and Hormonal Parameters in Women with Polycystic Ovary Syndrome (PCOS). Obes Surg. 2020 Jun;30(6):2294-2300. doi: 10.1007/s11695-020-04487-3. PubMed PMID: 32088855.
  • Shalimar, Kumar R, Rout G, Kumar R, Yadav R, Das P, Aggarwal S, Gunjan D, Saraya A, Nayak B. Body mass index-based controlled attenuation parameter cut-offs for assessment of hepatic steatosis in non-alcoholic fatty liver disease. Indian J Gastroenterol. 2020 Feb;39(1):32-41. doi: 10.1007/s12664-019-00991-2. Epub 2020 Mar 17. PubMed PMID: 32185692.
  • Singla V, Aggarwal S, Singh B, Tharun G, Katiyar V, Bhambri A. Outcomes in Super Obese Patients Undergoing One Anastomosis Gastric Bypass or Laparoscopic Sleeve Gastrectomy. Obes Surg. 2019 Apr;29(4):1242-1247. doi: 10.1007/s11695-018-03673-8. PubMed PMID: 30656569.
  • Singla V, Gattu T, Aggarwal S, Bhambri A, Agarwal S. Evaluation of Epworth Sleepiness Scale to Predict Obstructive Sleep Apnea in Morbidly Obese Patients and Increasing Its Utility. J Laparoendosc Adv Surg Tech A. 2019 Mar;29(3):298-302. doi: 10.1089/lap.2018.0329. Epub 2018 Aug 15. PubMed PMID: 30109974. Vincent V, Thakkar H, Aggarwal S, Mridha AR, Ramakrishnan L, Singh A. ATP-binding cassette transporter A1 (ABCA1) expression in adipose tissue and its modulation with insulin resistance in obesity. Diabetes Metab Syndr Obes. 2019;12:275-284. doi: 10.2147/DMSO.S186565. eCollection 2019. PubMed PMID: 30881070; PubMed Central PMCID: PMC6395069.
  • Aggarwal S, Bhambri A, Singla V, Dash NR, Sharma A. Adenocarcinoma of oesophagus involving gastro-oesophageal junction following mini-gastric bypass/one anastomosis gastric bypass. J Minim Access Surg. 2019 Feb 18;. doi: 10.4103/jmas.JMAS_320_18. [Epub ahead of print] PubMed PMID: 30777997; PubMed Central PMCID: PMC7176000.
  • Arumalla K, Singla V, Aggarwal S, Garg H, Goel R, Katiyar V. Outcomes in morbidly obese adolescent patients undergoing laparoscopic sleeve gastrectomy in the Indian subcontinent: A retrospective review. J Minim Access Surg. 2019 Jan-Mar;15(1):31-36. doi: 10.4103/jmas.JMAS_143_17. PubMed PMID: 29483370; PubMed Central PMCID: PMC6293674.
  • 58. Singla V, Aggarwal S, Garg H, Kashyap L, Shende DR, Agarwal S. Outcomes in Super Obese Patients Undergoing Laparoscopic Sleeve Gastrectomy. J Laparoendosc Adv Surg Tech A. 2018 Mar;28(3):256-262. doi: 10.1089/lap.2017.0536. Epub 2017 Nov 3. PubMed PMID: 29099314.
  • 59. Garg H, Aggarwal S, Shalimar, Yadav R, Datta Gupta S, Agarwal L, Agarwal S. Utility of transient elastography (fibroscan) and impact of bariatric surgery on nonalcoholic fatty liver disease (NAFLD) in morbidly obese patients. Surg Obes Relat Dis. 2018 Jan;14(1):81-91. doi: 10.1016/j.soard.2017.09.005. Epub 2017 Sep 11. PubMed PMID: 29126863.
  • 60. Garg H, Aggarwal S, Misra MC, Priyadarshini P, Swami A, Kashyap L, Jaiswal R. Mid to long term outcomes of Laparoscopic Sleeve Gastrectomy in Indian population: 3-7 year results - A retrospective cohort study. Int J Surg. 2017 Dec;48:201-209. doi: 10.1016/j.ijsu.2017.10.076. Epub 2017 Nov 6. PubMed PMID: 29122706.
  • Priyadarshini P, Singh VP, Aggarwal S, Garg H, Sinha S, Guleria R. Impact of bariatric surgery on obstructive sleep apnoea-hypopnea syndrome in morbidly obese patients. J Minim Access Surg. 2017 Oct-Dec;13(4):291-295. doi: 10.4103/jmas.JMAS_5_17. PubMed PMID: 28872099; PubMed Central PMCID: PMC5607797.
  • Garg H, Priyadarshini P, Aggarwal S, Agarwal S, Chaudhary R. Comparative study of outcomes following laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy in morbidly obese patients: A case control study. World J Gastrointest Endosc. 2017 Apr 16;9(4):162-170. doi: 10.4253/wjge.v9.i4.162. PubMed PMID: 28465782; PubMed Central PMCID: PMC5394722.
  • Garg H, Vigneshwaran B, Aggarwal S, Ahuja V. Impact of concomitant laparoscopic sleeve gastrectomy and hiatal hernia repair on gastro-oesophageal reflux disease in morbidly obese patients. J Minim Access Surg. 2017 Apr-Jun;13(2):103-108. doi: 10.4103/0972-9941.201730. PubMed PMID: 28281472; PubMed Central PMCID: PMC5363114.
  • Vigneshwaran B, Wahal A, Aggarwal S, Priyadarshini P, Bhattacharjee H, Khadgawat R, Yadav R. Impact of Sleeve Gastrectomy on Type 2 Diabetes Mellitus, Gastric Emptying Time, Glucagon-Like Peptide 1 (GLP-1), Ghrelin and Leptin in Non-morbidly Obese Subjects with BMI 30-35.0 kg/m2: a Prospective Study. Obes Surg. 2016 Dec;26(12):2817-2823. doi: 10.1007/s11695-016-2226-9. PubMed PMID: 27185177.
  • Sharma SK, Katoch VM, Mohan A, Kadhiravan T, Elavarasi A, Ragesh R, Nischal N, Sethi P, Behera D, Bhatia M, Ghoshal AG, Gothi D, Joshi J, Kanwar MS, Kharbanda OP, Kumar S, Mohapatra PR, Mallick BN, Mehta R, Prasad R, Sharma SC, Sikka K, Aggarwal S, Shukla G, Suri JC, Vengamma B, Grover A, Vijayan VK, Ramakrishnan N, Gupta R. Consensus and evidence-based Indian initiative on obstructive sleep apnea guidelines 2014 (first edition). Lung India. 2015 Jul-Aug;32(4):422-34. doi: 10.4103/0970-2113.159677. PubMed PMID: 26180408; PubMed Central PMCID: PMC4502224.
  • Mahawar KK, Aggarwal S, Carr WR, Jennings N, Balupuri S, Small PK. Consensus statements and bariatric surgery. Obes Surg. 2015 Jun;25(6):1063-5. doi: 10.1007/s11695-015-1606-x. PubMed PMID: 25680578.
  • Aggarwal S, Sharma AP, Kumar R, Anand S. Totally Robotic Roux-en-Y Gastric Bypass: Technique. Indian J Surg. 2015 Apr;77(2):164-6. doi: 10.1007/s12262-013-0948-7. Epub 2013 Jul 20. PubMed PMID: 26139977; PubMed Central PMCID: PMC4484530.
  • Aggarwal S, Modi S, Jose T. Laparoscopic sleeve gastrectomy leads to reduction in thyroxine requirement in morbidly obese patients with hypothyroidism. World J Surg. 2014 Oct;38(10):2628-31. doi: 10.1007/s00268-014-2646-4. PubMed PMID: 24844659.
  • Aggarwal S, Uniyal M. Bariatric surgery: An overview. Natl Med J India. 2014 Sep-Oct;27(5):261-6. Review. PubMed PMID: 26037426.
  • Sharma A, Aggarwal S, Ahuja V, Bal C. Evaluation of gastroesophageal reflux before and after sleeve gastrectomy using symptom scoring, scintigraphy, and endoscopy. Surg Obes Relat Dis. 2014 Jul-Aug;10(4):600-5. doi: 10.1016/j.soard.2014.01.017. Epub 2014 Jan 28. PubMed PMID: 24837563.
  • Aggarwal S, Sharma AP, Ramaswamy N. Outcome of laparoscopic sleeve gastrectomy with and without staple line oversewing in morbidly obese patients: a randomized study. J Laparoendosc Adv Surg Tech A. 2013 Nov;23(11):895-9. doi: 10.1089/lap.2013.0137. Epub 2013 Sep 28. PubMed PMID: 24073838.
  • Aggarwal S, Bhattacharjee H, Chander Misra M. Practice of routine intraoperative leak test during laparoscopic sleeve gastrectomy should not be discarded. Surg Obes Relat Dis. 2011 Sep-Oct;7(5):e24-5. doi: 10.1016/j.soard.2011.03.013. Epub 2011 Apr 15. PubMed PMID: 21616724.
  • Misra A, Chowbey P, Makkar BM, Vikram NK, Wasir JS, Chadha D, Joshi SR, Sadikot S, Gupta R, Gulati S, Munjal YP. Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians and recommendations for physical activity, medical and surgical management. J Assoc Physicians India. 2009 Feb;57:163-70. Review. PubMed PMID: 19582986.
  • Aggarwal S, Kini SU, Herron DM. Laparoscopic sleeve gastrectomy for morbid obesity: a review. Surg Obes Relat Dis. 2007 Mar-Apr;3(2):189-94. doi: 10.1016/j.soard.2006.10.013. Review. PubMed PMID: 17386400.

    Field of Expertise

  • Bariatric Surgery
  • Hernia Surgery
  • Laparoscopic Upper GI Surgery
  • Solid Organ including Laparoscopic Splenectomy And Adrenalectomy
  • Renal Transplantation

    • Fellowship & Membership

  • Commonwealth Fellow
  • Fellowship of American College of Surgeons (FACS)
  • Fellowship of International College of Laparoscopic Surgeons (FCLS)
  • Fellowship of International Union Against Cancer (UICC)
  • Research Fellow in Division of Laparoscopic Surgery; Mount Sinai School of Medicine, New York, USA. (Dec 2005-Dec 2006)

    • Languages Spoken

  • English
  • Hindi

    • Awards & Achievements

  • Best Researcher Award” of the Indian Association of Gastrointestinal Endoscopic Surgeons (IAGES) for the year 2020
  • Obesity Surgery Editors Recognition Award for Distinction in Reviewing 2020
  • Certificate for Commendation at AIIMS Excellence Research Award; Awarded at 3rd AIIMS Research Day held on 30th January 2024
  • Pioneered this speciality of surgery in the government sector in the year 2008. Established and nurtured the specialty of Bariatric Surgery in the Country.
  • Have performed more than 1300 bariatric surgical procedures with excellent results at par with World's best centres
  • Established a dedicated Bariatric Surgery Clinic at AIIMS. Since its establishment thousands of new obese patients have been registered and counselled for weight loss surgery.
  • Instrumental in establishing the 2-year Bariatric Fellowship Program at AIIMS for proper training of surgeons which would help in capacity building
  • Helped start similar programs in other public hospitals in the country and mentored the surgeons at AIIMS Bhatinda, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Lok Nayak Jai Prakash (LNJP) hospital and Lady Hardinge Medical College (LHMC), New Delhi and help them start bariatric surgery in their hospitals.
  • First one to perform bariatric surgery in Bihar at the invitation of the Bihar Chapter of the Association of Surgeons of India (ASI) and hence kick start the program in Bihar.
  • Recognized internationally as an expert in this field. Invited to be Section –editor of an international book authored by the World's leading experts on Bariatric Surgery titled “Obesity, Bariatric and Metabolic Surgery: A Practical Guide”. Contributed a chapter on the Technique of Laparoscopic Sleeve Gastrectomy (LSG), the most popular bariatric surgical procedure.
  • Member of various Expert committees and meetings to develop guidelines for issues related to Bariatric Surgery in India. Nominated member of the executive committee of Obesity and Metabolic Surgery Society of India (OSSI) for a period of three years. Frequently quoted in the national media-both print and electronic. Has been invited as an expert on Doordarshan health shows several times.
  • Convenor for Bariatric Surgery Fellowship of National Board of Examinations
  • Delivered more than 150 invited lectures related to Bariatric Surgery as well as MAS
  • Founder President of the “Foundation for Obesity Research and Metabolic Surgery” (FORMS) - a non-profit non-governmental society registered under the Societies Act for creating awareness and education about Bariatric surgery
  • Organized several workshops and meetings to spread knowledge and skills including Cadaver Courses on Bariatric surgery. Organizing Chairman of the First National Postgraduate CME on Bariatric Surgery held at AIIMS in year 2017 which focused on postgraduate students to fill the gap in medical curriculum.
  • Other Achievements
  • Editor, Journal of Minimal Access Surgery (JMAS), a PubMed indexed journal
  • Member Editorial Board of the prestigious journal- ‘Obesity Surgery’
  • Associate Editor, Journal of Bariatric Surgery
  • Chairman of the Scientific Committee of Obesity & Metabolic Surgery Society of India (OSSI)
  • Past Member of Institutional Ethics Committee (IEC) for Post Graduate Research, AIIMS
  • Past Member of the IEC Sub-committee for Serious Adverse Events (SAE)
  • Member of the SAGES-MIRA Expert Group Meeting for Framing Guidelines for Use of Robots in Surgery held in New York, USA in 2006
  • Section Editor of Section on Laparoscopic Sleeve Gastrectomy In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: First Edition, Publisher: Springer.
  • Co-Chairman of the Expert Group to frame National Guidelines for the Surgical Treatment of Obstructive Sleep Apnea
  • Ex Board member of the Society of Endoscopic and Laparoscopic Surgery of India (SELSI)
  • Member of the committee to finalize rules and package for Bariatric Surgery for CGHS patients, Ministry of Health, GOI

    • Talks & Publications

  • List of Important Publications (Full Papers)
  • For complete list
  • Pubmed:Click Here
  • ORCID: Click Here
  • Chapter in Books
  • Sandeep Aggarwal, Mehul Gupta, Vitish Singla, Michel Gagner. LSG: The Tech-nique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: Second Edition, Publisher: Springer, Editor: Sanjay Agrawal
  • Sandeep Aggarwal, Vitish Singla. Current Status of One Anastomosis Gastric By-pass. Chapter 12 in IAGES Recent Advances in Minimal Access Surgery 2, Edition: Second, Publisher: Jaypee Brothers. Editor: Subhash Khanna
  • Sandeep Aggarwal, Vitish Singla, Devender Singh, Amit Bhambri, Prasanna Rama-na. GI Complications in Bariatric Surgery in Management of Nutritional and Meta-bolic Complications of Bariatric Surgery. Publisher: Springer Nature. Editors: Aparna Govil Bhasker, Nimisha Kantharia
  • Sandeep Aggarwal, Pratyusha Priyadarshini, Michel Gagner. LSG: The Technique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edi-tion: First Edition, Publisher: Springer, Editors: Sanjay Agrawal, pp.247-57 . DOI: 10.1007/978-3-319-04343-2
  • Sandeep Aggarwal · Pratyusha Priyadarshini · Sanjay Agrawal. Current Concepts in Bariatric Surgery: A Review. Chapter in GI Surgery Annual. Editor: T K Chatto-padhay. pp 2016
  • Harshit Garg, Sandeep Aggarwal. Bariatric Surgery: Current Concepts in Roshan Lall Gupta's Recent Advances in Surgery – 14, Publisher: Jaypee, Editor: Puneet, pp: 217-236, · Chapter · Nov 2015
  • Full papers in Indexed Journals
  • Singh, B., Saikaustubh, Y., Singla, V. et al. One Anastomosis Gastric Bypass (OAGB) vs Roux en Y Gastric Bypass (RYGB) for Remission of T2DM in Patients with Morbid Obesity: a Randomized Controlled Trial. OBES SURG 33, 1218–1227 (2023). https://doi.org/10.1007/s11695-023-06515-4
  • Umang Arora1 Sagnik Biswas1 Sandeep Aggarwal1 Ajay Duseja2,* Shalimar1,* MASLD screening and diagnostic algorithms are interchangeable with existing NAFLD literature. Journal of Hepatology, February 2024. vol. 80 j e51–e91.
  • Sai Divya Yadavalli, Arun Kumar, MS, MCh, Vitish Singla, MS, MCh, Venu Madhav Jarapala, MBBS, MS, Vineet Ahuja, MD, DM, Surabhi Vyas, MD, DNB, and Sandeep Aggarwal, MS, FACS. Incidence of Barrett's Esophagus Following Sleeve Gastrectomy in Southeast Asian Population. Journal of Laparoendoscopic & Advanced Surgical Techniques. 2024;34(2):127-34
  • Sachan A, Aggarwal S, Pol MM, Singh A, Yadav R. Expression analysis of MMP14: Key enzyme action in modulating visceral adipose tissue plasticity in patients with obesity. Clinical Obesity. 2023;13(5):e12607. doi:10.1111/cob.12607
  • Elhence A, Anand A, Biswas S, Vaishnav M, Yadav R, Das P, ---- Agarwal S, etal. Compensated Advanced Chronic Liver Disease in Nonalcoholic Fatty Liver Disease: Two-Step Strategy is Better than Baveno Criteria. Dig Dis Sci 2023; 68:1016–1025
  • Umang Arora, Ritik M Goyal, Levin K J The-----Sandeep Aggarwal, Narendra Choudhary, Prajna Anirvan, Shivaram P Singh, Arka De, Ajay Duseja, Shalimar. Poor Performance of Non-Invasive Tests for Advanced Fibrosis in Nonalcoholic Fatty Liver Disease: A Multicentric Asian Study. Dig Dis Sci 2023; 68: 4485–4498.
  • Kumar A, Madhav JV, Singla V, Monga S, Aggarwal S. Concomitant Hiatal Hernia Repair With Sleeve Gastrectomy: Impact on Gastroesophageal Reflux? Surg Laparosc Endosc Percutan Tech. 2023 Oct 1;33(5):435-439. doi: 10.1097/SLE.0000000000001216. PMID: 37671614.
  • Singla V, Gupta A, Gupta A, Monga S, Kumar A, Chekuri R, Gupta M, Kashyap L, Shalimar, Aggarwal S. Outcomes of Laparoscopic Sleeve Gastrectomy (LSG) vs One-Anastomosis Gastric Bypass (OAGB) in Patients with Super-Super Obesity (BMI ≥ 60 kg/m2). Obes Surg. 2023 Nov 24. doi: 10.1007/s11695-023-06960-1.
  • Bhasker, Aparna Govil; Tantia, Om1; Khaitan, Manish2; Wadhawan, Randeep3; Kular, K. S.4; Baig, Sarfaraz Jalil5; Shah, Sumeet6; ---------Aggarwal, Sandeep17; et al. A Delphi Consensus on the Surgical Technique of Laparoscopic Sleeve Gastrectomy: An Obesity and Metabolic Surgery Society of India Initiative. Journal of Bariatric Surgery 2(2):p 79-84, May–Aug 2023. | DOI: 10.4103/jbs.jbs_7_23
  • Gupta, M., Singla, V., Kumar, A. et al. Response to Letter to the Editor: Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic Review and Meta-analysis. OBES SURG. 2023; 33:372–373
  • Gupta M, Singla V, Kumar A, Chekuri R, Kaustubh YS, Aggarwal S. Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic review and Meta-analysis. Obes Surg. 2022 Aug;32(8):2744-2752
  • Omar I, Miller K, Madhok B, Amr B, Singhal R, Graham Y, Pouwels S, Abu Hilal M, Aggarwal S, et al. The first international Delphi consensus statement on Laparoscopic Gastrointestinal surgery. Int J Surg. 2022 Aug;104:106766. doi: 10.1016/j.ijsu.2022.106766. Epub 2022 Jul 13. PubMed PMID: 35842089.
  • Singla V, Kumar A, Gupta M, Manohar M, Monga S, Agarwal S, Sharma AK, Aggarwal S. Gastrointestinal Quality of Life in Morbidly Obese Patients Undergoing One Anastomosis Gastric Bypass (OAGB): Derivation of a ""Mini GIQLI"" Score. Obes Surg. 2022 Jul;32(7):2332-2340.
  • Arumugaswamy PR, Singla V, Singh P, Kumar R, Aggarwal S. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surg Endosc. 2022 Jul;36(7):4771-4779
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, Angrisani L, Badiuddin FM, Balibrea JM, Bashir A, Behrens E, Bhatia K, Biertho L, Biter LU, Dargent J, De Luca M, DeMaria E, Elfawal MH, Fried M, Gawdat KA, Graham Y, Herrera MF, Himpens JM, Hussain FA, Kasama K, Kerrigan D, Kow L, Kristinsson J, Kurian M, Liem R, Lutfi RE, Menon V, Miller K, Noel P, Ospanov O, Ozmen MM, Peterli R, Ponce J, Prager G, Prasad A, Raj PP, Rodriguez NR, Rosenthal R, Sakran N, Santos JN, Shabbir A, Shikora SA, Small PK, Taylor CJ, Wang C, Weiner RA, Wylezol M, Yang W, Aminian A. The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Dec;35(12):7027-7033. doi: 10.1007/s00464-020-08216-w. Epub 2021 Jan 12. PubMed PMID: 33433676.
  • Kaul A, Kumar A, Baksi A, Singla V, Aggarwal S, Gulati G, Narang R, Kashyap L. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc. 2021 Nov;35(11):6006-6012. doi: 10.1007/s00464-020-08088-0. Epub 2020 Oct 13. PubMed PMID: 33048234.
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2021 Oct-Dec;17(4):462-469. doi: 10.4103/jmas.JMAS_19_20. PubMed PMID: 32964893; PubMed Central PMCID: PMC8486063.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2021 Jul-Sep;17(3):322-328. doi: 10.4103/jmas.JMAS_167_19. PubMed PMID: 32964884; PubMed Central PMCID: PMC8270047.
  • Bhambri A, Singla V, Kaul A, Shalimar, Kashyap L, Aggarwal S. Surgical management of super-super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian J Endosc Surg. 2021 Jul;14(3):570-573. doi: 10.1111/ases.12882. Epub 2020 Oct 22. PubMed PMID: 33094552.
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2021 May;36(5):1309-1316. doi: 10.1111/jgh.15358. Epub 2020 Dec 16. PubMed PMID: 33232525.1.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 May;31(5):2344-2345. doi: 10.1007/s11695-020-05162-3. Epub 2021 Jan 19.
  • Thakkar H, Vincent V, Shukla S, Sra M, Kanga U, Aggarwal S, Singh A. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr. 2021 Apr 17;13(1):46. doi: 10.1186/s13098-021-00662-3.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, Bindal V, Katakwar A, Vennapusa A, Bhasker AG, Peters A, Goel D, Bedi D, Palep J, Kona L, Mehrotra M, Baijal M, Bhandari M, Dukkipati N, Wadhawan R, Baig S, Pattanshetti S, Ugale S. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PubMed PMID: 32964881;
  • Singh, D., Baksi, A., Ramana, P. et al. Five-Year Outcomes of Sleeve Gastrectomy in Patients with Class I Obesity and Type 2 Diabetes Mellitus. OBES SURG (2021).
  • Prasanna Ramana Arumugaswamy, Vitish Singla, · Prabhjot Singh, Rajeev Kumar, Sandeep Aggarwal. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surgical Endoscopy (2021) https://doi.org/10.1007/s00464-021-08818-y
  • Mózes FE, Lee JA, Selvaraj EA,-------- Aggarwal S, ---- et al. Diagnostic accuracy of non-invasive tests for advanced fibrosis in patients with NAFLD: an individual patient data meta-analysis. Gut 2021 Epub ahead of print: doi:10.1136/gutjnl-2021-324243
  • Baksi, A., Aggarwal, S. Reply to: Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. OBES SURG (2021). https://doi.org/10.1007/s11695-021-05490-y
  • Mukti Sharma, Sandeep Aggarwal, Umakant Nayar, Naval Kishore Vikram, Anoop Misra, Kalpana Luthra. Differential expression of insulin receptor substrate-1(IRS-1) in visceral and subcutaneous adipose depots of morbidly obese subjects undergoing bariatric surgery in a tertiary care center in north India; SNP analysis and correlation with metabolic profile. Diabetes & Metabolic Syndrome: Clinical Research & Reviews. 2021;15(3). 981-986 ISSN 1871-4021, https://doi.org/10.1016/j.dsx.2021.04.014.
  • 29. Thakkar, H., Vincent, V., Sukhla, S---- Aggarwal S -- et al. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr 13, 46 (2021). https://doi.org/10.1186/s13098-021-00662-3
  • Jain S, Baksi A, Kumar A, Aggarwal S. Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. Obes Surg. 2021 Mar 10. doi: 10.1007/s11695-021-05322-z. Epub ahead of print. PMID: 33694055.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 Jan 19. doi: 10.1007/s11695-020-05162-3. Epub ahead of print. PMID: 33469860.
  • Petroff D, Blank V, Newsome PN, Shalimar, Voican CS, Thiele M, -------, Aggarwal S, et al. Assessment of hepatic steatosis by controlled attenuation parameter using the M and XL probes: an individual patient data meta-analysis. Lancet Gastroenterol Hepatol. 2021 Jan 15:S2468-1253(20)30357-5. doi: 10.1016/S2468-1253(20)30357-5. Epub ahead of print. PMID: 33460567.
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, et al The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Jan 12. doi: 10.1007/s00464-020-08216-w. Epub ahead of print. PMID: 33433676.
  • Agarwal L, Sahu AK, Baksi A, Agarwal A, Aggarwal S, Safety of Metabolic and Bariatric Surgery in Obese Patients with Liver Cirrhosis: A Systematic Review and Meta-analysis, Surgery for Obesity and Related Diseases (2020), doi: https://doi.org/10.1016/j.soard.2020.11.004
  • Sachan A, Singh A, Shukla S, Aggarwal S, Mir I, Yadav R. Serum Adipocytokines Levels and Their Association with Insulin Sensitivity in Morbidly Obese Individuals Undergoing Bariatric Surgery. J Obes Metab Syndr. 2020 Dec 30;29(4):303-312. doi: 10.7570/jomes20090. PMID: 33380577; PMCID: PMC7789018.
  • Kaul, A., Kumar, A., Baksi, A. Aggarwal S. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc (2020). https://doi.org/10.1007/s00464-020-08088-0
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2020 Nov 24;. doi: 10.1111/jgh.15358. [Epub ahead of print] PubMed PMID: 33232525.
  • Amit Bhambri, Vitish Singla, Aashir Kaul, Shalimar, Lokesh Kashyap, Sandeep Aggarwal. Surgical management of super‐super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian Journal of Endoscopic Surgery. First published: 22 October 2020
  • https://doi.org/10.1111/ases.12882
  • Aggarwal, S., Baksi, A. & Kamtam, D.N.H. Reply to: Incidence of Marginal Ulcers After Gastric Bypass Seems to Be Inversely Related to the Duration of Prophylaxis with Proton Pump Inhibitors. OBES SURG (2020). https://doi.org/10.1007/s11695-020-05051-9
  • Agarwal, L., Aggarwal, S., Shalimar et al. Bariatric Surgery in Nonalcoholic Fatty Liver Disease (NAFLD): Impact Assessment Using Paired Liver Biopsy and Fibroscan. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04977-4
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2020 Sep 19. doi: 10.4103/jmas.JMAS_19_20. Epub ahead of print. PMID: 32964893.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2020 Sep 12. doi: 10.4103/jmas.JMAS_167_19. Epub ahead of print. PMID: 32964884.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, et al. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PMID: 32964881.
  • Singla V, Aggarwal S, Aggarwal S, Gupta M, Singh D. Correlation of weight loss with residual gastric volume on computerized tomography in patients undergoing sleeve gastrectomy: A systematic review. Clin Obes. 2020 Oct;10(5):e12394. doi: 10.1111/cob.12394. Epub 2020 Aug 7. PMID: 32767720.
  • Yadav R, Aggarwal S, Singh A. SARS-CoV-2-host dynamics: Increased risk of adverse outcomes of COVID-19 in obesity. Diabetes Metab Syndr. 2020 Sep-Oct;14(5):1355-1360. doi: 10.1016/j.dsx.2020.07.030. Epub 2020 Jul 21. PMID: 32755835; PMCID: PMC7372253.
  • Pouwels S, Omar I, Aggarwal S, Aminian A, Angrisani L, Balibrea JM, et al. The First Modified Delphi Consensus Statement for Resuming Bariatric and Metabolic Surgery in the COVID-19 Times. Obes Surg. 2020 Aug 1:1–6. doi: 10.1007/s11695-020-04883-9. Epub ahead of print. PMID: 32740826; PMCID: PMC7395568
  • Baksi A, Kamtam DNH, Aggarwal S, Ahuja V, Kashyap L, Shende DR. Should Surveillance Endoscopy Be Routine After One Anastomosis Gastric Bypass to Detect Marginal Ulcers: Initial Outcomes in a Tertiary Referral Centre. Obes Surg. 2020 Jul 27. doi: 10.1007/s11695-020-04864-y. Epub ahead of print. PMID: 32720263.
  • Kaul, A., Singla, V., Baksi, A. et al. Safety and Efficacy of Bariatric Surgery in Advanced Liver Fibrosis. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04827-3
  • Aggarwal, S., Mahawar, K., Khaitan, M. et al. Obesity and Metabolic Surgery Society of India (OSSI) Recommendations for Bariatric and Metabolic Surgery Practice During the COVID-19 Pandemic. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04940-
  • Khan WA, Singla V, Aggarwal S, Gupta Y. Outcome of Bariatric Surgery on Hypothyroidism: Experience from a Tertiary Care Centre in India. April 2020. Surgery for Obesity and Related Diseases. DOI: 10.1016/j.soard.2020.03.035
  • Singh D, Arumalla K, Aggarwal S, Singla V, Ganie A, Malhotra N. Impact of Bariatric Surgery on Clinical, Biochemical, and Hormonal Parameters in Women with Polycystic Ovary Syndrome (PCOS). Obes Surg. 2020 Jun;30(6):2294-2300. doi: 10.1007/s11695-020-04487-3. PubMed PMID: 32088855.
  • Shalimar, Kumar R, Rout G, Kumar R, Yadav R, Das P, Aggarwal S, Gunjan D, Saraya A, Nayak B. Body mass index-based controlled attenuation parameter cut-offs for assessment of hepatic steatosis in non-alcoholic fatty liver disease. Indian J Gastroenterol. 2020 Feb;39(1):32-41. doi: 10.1007/s12664-019-00991-2. Epub 2020 Mar 17. PubMed PMID: 32185692.
  • Singla V, Aggarwal S, Singh B, Tharun G, Katiyar V, Bhambri A. Outcomes in Super Obese Patients Undergoing One Anastomosis Gastric Bypass or Laparoscopic Sleeve Gastrectomy. Obes Surg. 2019 Apr;29(4):1242-1247. doi: 10.1007/s11695-018-03673-8. PubMed PMID: 30656569.
  • Singla V, Gattu T, Aggarwal S, Bhambri A, Agarwal S. Evaluation of Epworth Sleepiness Scale to Predict Obstructive Sleep Apnea in Morbidly Obese Patients and Increasing Its Utility. J Laparoendosc Adv Surg Tech A. 2019 Mar;29(3):298-302. doi: 10.1089/lap.2018.0329. Epub 2018 Aug 15. PubMed PMID: 30109974. Vincent V, Thakkar H, Aggarwal S, Mridha AR, Ramakrishnan L, Singh A. ATP-binding cassette transporter A1 (ABCA1) expression in adipose tissue and its modulation with insulin resistance in obesity. Diabetes Metab Syndr Obes. 2019;12:275-284. doi: 10.2147/DMSO.S186565. eCollection 2019. PubMed PMID: 30881070; PubMed Central PMCID: PMC6395069.
  • Aggarwal S, Bhambri A, Singla V, Dash NR, Sharma A. Adenocarcinoma of oesophagus involving gastro-oesophageal junction following mini-gastric bypass/one anastomosis gastric bypass. J Minim Access Surg. 2019 Feb 18;. doi: 10.4103/jmas.JMAS_320_18. [Epub ahead of print] PubMed PMID: 30777997; PubMed Central PMCID: PMC7176000.
  • Arumalla K, Singla V, Aggarwal S, Garg H, Goel R, Katiyar V. Outcomes in morbidly obese adolescent patients undergoing laparoscopic sleeve gastrectomy in the Indian subcontinent: A retrospective review. J Minim Access Surg. 2019 Jan-Mar;15(1):31-36. doi: 10.4103/jmas.JMAS_143_17. PubMed PMID: 29483370; PubMed Central PMCID: PMC6293674.
  • 58. Singla V, Aggarwal S, Garg H, Kashyap L, Shende DR, Agarwal S. Outcomes in Super Obese Patients Undergoing Laparoscopic Sleeve Gastrectomy. J Laparoendosc Adv Surg Tech A. 2018 Mar;28(3):256-262. doi: 10.1089/lap.2017.0536. Epub 2017 Nov 3. PubMed PMID: 29099314.
  • 59. Garg H, Aggarwal S, Shalimar, Yadav R, Datta Gupta S, Agarwal L, Agarwal S. Utility of transient elastography (fibroscan) and impact of bariatric surgery on nonalcoholic fatty liver disease (NAFLD) in morbidly obese patients. Surg Obes Relat Dis. 2018 Jan;14(1):81-91. doi: 10.1016/j.soard.2017.09.005. Epub 2017 Sep 11. PubMed PMID: 29126863.
  • 60. Garg H, Aggarwal S, Misra MC, Priyadarshini P, Swami A, Kashyap L, Jaiswal R. Mid to long term outcomes of Laparoscopic Sleeve Gastrectomy in Indian population: 3-7 year results - A retrospective cohort study. Int J Surg. 2017 Dec;48:201-209. doi: 10.1016/j.ijsu.2017.10.076. Epub 2017 Nov 6. PubMed PMID: 29122706.
  • Priyadarshini P, Singh VP, Aggarwal S, Garg H, Sinha S, Guleria R. Impact of bariatric surgery on obstructive sleep apnoea-hypopnea syndrome in morbidly obese patients. J Minim Access Surg. 2017 Oct-Dec;13(4):291-295. doi: 10.4103/jmas.JMAS_5_17. PubMed PMID: 28872099; PubMed Central PMCID: PMC5607797.
  • Garg H, Priyadarshini P, Aggarwal S, Agarwal S, Chaudhary R. Comparative study of outcomes following laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy in morbidly obese patients: A case control study. World J Gastrointest Endosc. 2017 Apr 16;9(4):162-170. doi: 10.4253/wjge.v9.i4.162. PubMed PMID: 28465782; PubMed Central PMCID: PMC5394722.
  • Garg H, Vigneshwaran B, Aggarwal S, Ahuja V. Impact of concomitant laparoscopic sleeve gastrectomy and hiatal hernia repair on gastro-oesophageal reflux disease in morbidly obese patients. J Minim Access Surg. 2017 Apr-Jun;13(2):103-108. doi: 10.4103/0972-9941.201730. PubMed PMID: 28281472; PubMed Central PMCID: PMC5363114.
  • Vigneshwaran B, Wahal A, Aggarwal S, Priyadarshini P, Bhattacharjee H, Khadgawat R, Yadav R. Impact of Sleeve Gastrectomy on Type 2 Diabetes Mellitus, Gastric Emptying Time, Glucagon-Like Peptide 1 (GLP-1), Ghrelin and Leptin in Non-morbidly Obese Subjects with BMI 30-35.0 kg/m2: a Prospective Study. Obes Surg. 2016 Dec;26(12):2817-2823. doi: 10.1007/s11695-016-2226-9. PubMed PMID: 27185177.
  • Sharma SK, Katoch VM, Mohan A, Kadhiravan T, Elavarasi A, Ragesh R, Nischal N, Sethi P, Behera D, Bhatia M, Ghoshal AG, Gothi D, Joshi J, Kanwar MS, Kharbanda OP, Kumar S, Mohapatra PR, Mallick BN, Mehta R, Prasad R, Sharma SC, Sikka K, Aggarwal S, Shukla G, Suri JC, Vengamma B, Grover A, Vijayan VK, Ramakrishnan N, Gupta R. Consensus and evidence-based Indian initiative on obstructive sleep apnea guidelines 2014 (first edition). Lung India. 2015 Jul-Aug;32(4):422-34. doi: 10.4103/0970-2113.159677. PubMed PMID: 26180408; PubMed Central PMCID: PMC4502224.
  • Mahawar KK, Aggarwal S, Carr WR, Jennings N, Balupuri S, Small PK. Consensus statements and bariatric surgery. Obes Surg. 2015 Jun;25(6):1063-5. doi: 10.1007/s11695-015-1606-x. PubMed PMID: 25680578.
  • Aggarwal S, Sharma AP, Kumar R, Anand S. Totally Robotic Roux-en-Y Gastric Bypass: Technique. Indian J Surg. 2015 Apr;77(2):164-6. doi: 10.1007/s12262-013-0948-7. Epub 2013 Jul 20. PubMed PMID: 26139977; PubMed Central PMCID: PMC4484530.
  • Aggarwal S, Modi S, Jose T. Laparoscopic sleeve gastrectomy leads to reduction in thyroxine requirement in morbidly obese patients with hypothyroidism. World J Surg. 2014 Oct;38(10):2628-31. doi: 10.1007/s00268-014-2646-4. PubMed PMID: 24844659.
  • Aggarwal S, Uniyal M. Bariatric surgery: An overview. Natl Med J India. 2014 Sep-Oct;27(5):261-6. Review. PubMed PMID: 26037426.
  • Sharma A, Aggarwal S, Ahuja V, Bal C. Evaluation of gastroesophageal reflux before and after sleeve gastrectomy using symptom scoring, scintigraphy, and endoscopy. Surg Obes Relat Dis. 2014 Jul-Aug;10(4):600-5. doi: 10.1016/j.soard.2014.01.017. Epub 2014 Jan 28. PubMed PMID: 24837563.
  • Aggarwal S, Sharma AP, Ramaswamy N. Outcome of laparoscopic sleeve gastrectomy with and without staple line oversewing in morbidly obese patients: a randomized study. J Laparoendosc Adv Surg Tech A. 2013 Nov;23(11):895-9. doi: 10.1089/lap.2013.0137. Epub 2013 Sep 28. PubMed PMID: 24073838.
  • Aggarwal S, Bhattacharjee H, Chander Misra M. Practice of routine intraoperative leak test during laparoscopic sleeve gastrectomy should not be discarded. Surg Obes Relat Dis. 2011 Sep-Oct;7(5):e24-5. doi: 10.1016/j.soard.2011.03.013. Epub 2011 Apr 15. PubMed PMID: 21616724.
  • Misra A, Chowbey P, Makkar BM, Vikram NK, Wasir JS, Chadha D, Joshi SR, Sadikot S, Gupta R, Gulati S, Munjal YP. Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians and recommendations for physical activity, medical and surgical management. J Assoc Physicians India. 2009 Feb;57:163-70. Review. PubMed PMID: 19582986.
  • Aggarwal S, Kini SU, Herron DM. Laparoscopic sleeve gastrectomy for morbid obesity: a review. Surg Obes Relat Dis. 2007 Mar-Apr;3(2):189-94. doi: 10.1016/j.soard.2006.10.013. Review. PubMed PMID: 17386400.

    • Overview

  • Dr. Sandeep Aggarwal attended medical school at All India Institute of Medical Sciences (AIIMS), New Delhi and completed his Masters in Surgery (MS) followed by Senior- Residency from AIIMS. He also completed a 1-year Research fellowship at Mount Sinai School of Medicine in New York, USA and a 4 month period at Homerton University, London, UK as a Commonwealth Fellow where he was trained in Bariatric Surgery. He has been a Faculty member in the Department of Surgical Disciplines at AIIMS since 1999 and was head of Surgery Unit II till June 2024. He is the foremost Bariatric Surgeon in Delhi. 

  • Dr. Sandeep is a renowned Laparoscopic, Bariatric, GI and Renal Transplant Surgeon in Delhi with more than 30 years of surgical experience. He is the chairman of the Institute of Bariatric, Minimal Access, GI and Robotic Surgery. Dr. Sandeep is widely recognized as a global leader in the field of Bariatric surgery having pioneered and nurtured this specialty in the public sector in India through his excellent clinical and research work in this field. He has performed more than 1300 bariatric surgery procedures, more than 400 renal transplants and more than 10000 laparoscopic surgical procedures including complex GI surgical procedures, adrenalectomy, splenectomy, hernias etc. 

  • Dr. Sandeep is an active researcher with more than 140 publications and several book chapters to his credit. He is a dedicated teacher, has trained several residents and fellows, performed live surgery at several workshops and has delivered more than 200 invited lectures at various national and international conferences. Dr. Sandeep holds editorial positions in several reputed journals including Editor of Journal of Minimal Access Surgery (JMAS). He has been invited as an expert on several Doordarshan health programs and is frequently quoted in media (both print and electronic) on bariatric surgery topics. Dr. Sandeep has been a Convenor/member of several expert committees. He was awarded the Best Researcher Award by the Indian Association of Gastrointestinal Endo Surgeons (IAGES) in the year 2020.

    Awards & Achievements

  • Best Researcher Award” of the Indian Association of Gastrointestinal Endoscopic Surgeons (IAGES) for the year 2020
  • Obesity Surgery Editors Recognition Award for Distinction in Reviewing 2020
  • Certificate for Commendation at AIIMS Excellence Research Award; Awarded at 3rd AIIMS Research Day held on 30th January 2024
  • Pioneered this speciality of surgery in the government sector in the year 2008. Established and nurtured the specialty of Bariatric Surgery in the Country.
  • Have performed more than 1300 bariatric surgical procedures with excellent results at par with World's best centres
  • Established a dedicated Bariatric Surgery Clinic at AIIMS. Since its establishment thousands of new obese patients have been registered and counselled for weight loss surgery.
  • Instrumental in establishing the 2-year Bariatric Fellowship Program at AIIMS for proper training of surgeons which would help in capacity building
  • Helped start similar programs in other public hospitals in the country and mentored the surgeons at AIIMS Bhatinda, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Lok Nayak Jai Prakash (LNJP) hospital and Lady Hardinge Medical College (LHMC), New Delhi and help them start bariatric surgery in their hospitals.
  • First one to perform bariatric surgery in Bihar at the invitation of the Bihar Chapter of the Association of Surgeons of India (ASI) and hence kick start the program in Bihar.
  • Recognized internationally as an expert in this field. Invited to be Section –editor of an international book authored by the World's leading experts on Bariatric Surgery titled “Obesity, Bariatric and Metabolic Surgery: A Practical Guide”. Contributed a chapter on the Technique of Laparoscopic Sleeve Gastrectomy (LSG), the most popular bariatric surgical procedure.
  • Member of various Expert committees and meetings to develop guidelines for issues related to Bariatric Surgery in India. Nominated member of the executive committee of Obesity and Metabolic Surgery Society of India (OSSI) for a period of three years. Frequently quoted in the national media-both print and electronic. Has been invited as an expert on Doordarshan health shows several times.
  • Convenor for Bariatric Surgery Fellowship of National Board of Examinations
  • Delivered more than 150 invited lectures related to Bariatric Surgery as well as MAS
  • Founder President of the “Foundation for Obesity Research and Metabolic Surgery” (FORMS) - a non-profit non-governmental society registered under the Societies Act for creating awareness and education about Bariatric surgery
  • Organized several workshops and meetings to spread knowledge and skills including Cadaver Courses on Bariatric surgery. Organizing Chairman of the First National Postgraduate CME on Bariatric Surgery held at AIIMS in year 2017 which focused on postgraduate students to fill the gap in medical curriculum.
  • Other Achievements
  • Editor, Journal of Minimal Access Surgery (JMAS), a PubMed indexed journal
  • Member Editorial Board of the prestigious journal- ‘Obesity Surgery’
  • Associate Editor, Journal of Bariatric Surgery
  • Chairman of the Scientific Committee of Obesity & Metabolic Surgery Society of India (OSSI)
  • Past Member of Institutional Ethics Committee (IEC) for Post Graduate Research, AIIMS
  • Past Member of the IEC Sub-committee for Serious Adverse Events (SAE)
  • Member of the SAGES-MIRA Expert Group Meeting for Framing Guidelines for Use of Robots in Surgery held in New York, USA in 2006
  • Section Editor of Section on Laparoscopic Sleeve Gastrectomy In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: First Edition, Publisher: Springer.
  • Co-Chairman of the Expert Group to frame National Guidelines for the Surgical Treatment of Obstructive Sleep Apnea
  • Ex Board member of the Society of Endoscopic and Laparoscopic Surgery of India (SELSI)
  • Member of the committee to finalize rules and package for Bariatric Surgery for CGHS patients, Ministry of Health, GOI

    • Fellowship & Membership

  • Commonwealth Fellow
  • Fellowship of American College of Surgeons (FACS)
  • Fellowship of International College of Laparoscopic Surgeons (FCLS)
  • Fellowship of International Union Against Cancer (UICC)
  • Research Fellow in Division of Laparoscopic Surgery; Mount Sinai School of Medicine, New York, USA. (Dec 2005-Dec 2006)

    • Field of Expertise

  • Bariatric Surgery
  • Hernia Surgery
  • Laparoscopic Upper GI Surgery
  • Solid Organ including Laparoscopic Splenectomy And Adrenalectomy
  • Renal Transplantation

    • Languages Spoken

  • English
  • Hindi

    • Talks & Publications

  • List of Important Publications (Full Papers)
  • For complete list
  • Pubmed:Click Here
  • ORCID: Click Here
  • Chapter in Books
  • Sandeep Aggarwal, Mehul Gupta, Vitish Singla, Michel Gagner. LSG: The Tech-nique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: Second Edition, Publisher: Springer, Editor: Sanjay Agrawal
  • Sandeep Aggarwal, Vitish Singla. Current Status of One Anastomosis Gastric By-pass. Chapter 12 in IAGES Recent Advances in Minimal Access Surgery 2, Edition: Second, Publisher: Jaypee Brothers. Editor: Subhash Khanna
  • Sandeep Aggarwal, Vitish Singla, Devender Singh, Amit Bhambri, Prasanna Rama-na. GI Complications in Bariatric Surgery in Management of Nutritional and Meta-bolic Complications of Bariatric Surgery. Publisher: Springer Nature. Editors: Aparna Govil Bhasker, Nimisha Kantharia
  • Sandeep Aggarwal, Pratyusha Priyadarshini, Michel Gagner. LSG: The Technique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edi-tion: First Edition, Publisher: Springer, Editors: Sanjay Agrawal, pp.247-57 . DOI: 10.1007/978-3-319-04343-2
  • Sandeep Aggarwal · Pratyusha Priyadarshini · Sanjay Agrawal. Current Concepts in Bariatric Surgery: A Review. Chapter in GI Surgery Annual. Editor: T K Chatto-padhay. pp 2016
  • Harshit Garg, Sandeep Aggarwal. Bariatric Surgery: Current Concepts in Roshan Lall Gupta's Recent Advances in Surgery – 14, Publisher: Jaypee, Editor: Puneet, pp: 217-236, · Chapter · Nov 2015
  • Full papers in Indexed Journals
  • Singh, B., Saikaustubh, Y., Singla, V. et al. One Anastomosis Gastric Bypass (OAGB) vs Roux en Y Gastric Bypass (RYGB) for Remission of T2DM in Patients with Morbid Obesity: a Randomized Controlled Trial. OBES SURG 33, 1218–1227 (2023). https://doi.org/10.1007/s11695-023-06515-4
  • Umang Arora1 Sagnik Biswas1 Sandeep Aggarwal1 Ajay Duseja2,* Shalimar1,* MASLD screening and diagnostic algorithms are interchangeable with existing NAFLD literature. Journal of Hepatology, February 2024. vol. 80 j e51–e91.
  • Sai Divya Yadavalli, Arun Kumar, MS, MCh, Vitish Singla, MS, MCh, Venu Madhav Jarapala, MBBS, MS, Vineet Ahuja, MD, DM, Surabhi Vyas, MD, DNB, and Sandeep Aggarwal, MS, FACS. Incidence of Barrett's Esophagus Following Sleeve Gastrectomy in Southeast Asian Population. Journal of Laparoendoscopic & Advanced Surgical Techniques. 2024;34(2):127-34
  • Sachan A, Aggarwal S, Pol MM, Singh A, Yadav R. Expression analysis of MMP14: Key enzyme action in modulating visceral adipose tissue plasticity in patients with obesity. Clinical Obesity. 2023;13(5):e12607. doi:10.1111/cob.12607
  • Elhence A, Anand A, Biswas S, Vaishnav M, Yadav R, Das P, ---- Agarwal S, etal. Compensated Advanced Chronic Liver Disease in Nonalcoholic Fatty Liver Disease: Two-Step Strategy is Better than Baveno Criteria. Dig Dis Sci 2023; 68:1016–1025
  • Umang Arora, Ritik M Goyal, Levin K J The-----Sandeep Aggarwal, Narendra Choudhary, Prajna Anirvan, Shivaram P Singh, Arka De, Ajay Duseja, Shalimar. Poor Performance of Non-Invasive Tests for Advanced Fibrosis in Nonalcoholic Fatty Liver Disease: A Multicentric Asian Study. Dig Dis Sci 2023; 68: 4485–4498.
  • Kumar A, Madhav JV, Singla V, Monga S, Aggarwal S. Concomitant Hiatal Hernia Repair With Sleeve Gastrectomy: Impact on Gastroesophageal Reflux? Surg Laparosc Endosc Percutan Tech. 2023 Oct 1;33(5):435-439. doi: 10.1097/SLE.0000000000001216. PMID: 37671614.
  • Singla V, Gupta A, Gupta A, Monga S, Kumar A, Chekuri R, Gupta M, Kashyap L, Shalimar, Aggarwal S. Outcomes of Laparoscopic Sleeve Gastrectomy (LSG) vs One-Anastomosis Gastric Bypass (OAGB) in Patients with Super-Super Obesity (BMI ≥ 60 kg/m2). Obes Surg. 2023 Nov 24. doi: 10.1007/s11695-023-06960-1.
  • Bhasker, Aparna Govil; Tantia, Om1; Khaitan, Manish2; Wadhawan, Randeep3; Kular, K. S.4; Baig, Sarfaraz Jalil5; Shah, Sumeet6; ---------Aggarwal, Sandeep17; et al. A Delphi Consensus on the Surgical Technique of Laparoscopic Sleeve Gastrectomy: An Obesity and Metabolic Surgery Society of India Initiative. Journal of Bariatric Surgery 2(2):p 79-84, May–Aug 2023. | DOI: 10.4103/jbs.jbs_7_23
  • Gupta, M., Singla, V., Kumar, A. et al. Response to Letter to the Editor: Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic Review and Meta-analysis. OBES SURG. 2023; 33:372–373
  • Gupta M, Singla V, Kumar A, Chekuri R, Kaustubh YS, Aggarwal S. Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic review and Meta-analysis. Obes Surg. 2022 Aug;32(8):2744-2752
  • Omar I, Miller K, Madhok B, Amr B, Singhal R, Graham Y, Pouwels S, Abu Hilal M, Aggarwal S, et al. The first international Delphi consensus statement on Laparoscopic Gastrointestinal surgery. Int J Surg. 2022 Aug;104:106766. doi: 10.1016/j.ijsu.2022.106766. Epub 2022 Jul 13. PubMed PMID: 35842089.
  • Singla V, Kumar A, Gupta M, Manohar M, Monga S, Agarwal S, Sharma AK, Aggarwal S. Gastrointestinal Quality of Life in Morbidly Obese Patients Undergoing One Anastomosis Gastric Bypass (OAGB): Derivation of a ""Mini GIQLI"" Score. Obes Surg. 2022 Jul;32(7):2332-2340.
  • Arumugaswamy PR, Singla V, Singh P, Kumar R, Aggarwal S. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surg Endosc. 2022 Jul;36(7):4771-4779
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, Angrisani L, Badiuddin FM, Balibrea JM, Bashir A, Behrens E, Bhatia K, Biertho L, Biter LU, Dargent J, De Luca M, DeMaria E, Elfawal MH, Fried M, Gawdat KA, Graham Y, Herrera MF, Himpens JM, Hussain FA, Kasama K, Kerrigan D, Kow L, Kristinsson J, Kurian M, Liem R, Lutfi RE, Menon V, Miller K, Noel P, Ospanov O, Ozmen MM, Peterli R, Ponce J, Prager G, Prasad A, Raj PP, Rodriguez NR, Rosenthal R, Sakran N, Santos JN, Shabbir A, Shikora SA, Small PK, Taylor CJ, Wang C, Weiner RA, Wylezol M, Yang W, Aminian A. The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Dec;35(12):7027-7033. doi: 10.1007/s00464-020-08216-w. Epub 2021 Jan 12. PubMed PMID: 33433676.
  • Kaul A, Kumar A, Baksi A, Singla V, Aggarwal S, Gulati G, Narang R, Kashyap L. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc. 2021 Nov;35(11):6006-6012. doi: 10.1007/s00464-020-08088-0. Epub 2020 Oct 13. PubMed PMID: 33048234.
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2021 Oct-Dec;17(4):462-469. doi: 10.4103/jmas.JMAS_19_20. PubMed PMID: 32964893; PubMed Central PMCID: PMC8486063.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2021 Jul-Sep;17(3):322-328. doi: 10.4103/jmas.JMAS_167_19. PubMed PMID: 32964884; PubMed Central PMCID: PMC8270047.
  • Bhambri A, Singla V, Kaul A, Shalimar, Kashyap L, Aggarwal S. Surgical management of super-super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian J Endosc Surg. 2021 Jul;14(3):570-573. doi: 10.1111/ases.12882. Epub 2020 Oct 22. PubMed PMID: 33094552.
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2021 May;36(5):1309-1316. doi: 10.1111/jgh.15358. Epub 2020 Dec 16. PubMed PMID: 33232525.1.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 May;31(5):2344-2345. doi: 10.1007/s11695-020-05162-3. Epub 2021 Jan 19.
  • Thakkar H, Vincent V, Shukla S, Sra M, Kanga U, Aggarwal S, Singh A. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr. 2021 Apr 17;13(1):46. doi: 10.1186/s13098-021-00662-3.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, Bindal V, Katakwar A, Vennapusa A, Bhasker AG, Peters A, Goel D, Bedi D, Palep J, Kona L, Mehrotra M, Baijal M, Bhandari M, Dukkipati N, Wadhawan R, Baig S, Pattanshetti S, Ugale S. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PubMed PMID: 32964881;
  • Singh, D., Baksi, A., Ramana, P. et al. Five-Year Outcomes of Sleeve Gastrectomy in Patients with Class I Obesity and Type 2 Diabetes Mellitus. OBES SURG (2021).
  • Prasanna Ramana Arumugaswamy, Vitish Singla, · Prabhjot Singh, Rajeev Kumar, Sandeep Aggarwal. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surgical Endoscopy (2021) https://doi.org/10.1007/s00464-021-08818-y
  • Mózes FE, Lee JA, Selvaraj EA,-------- Aggarwal S, ---- et al. Diagnostic accuracy of non-invasive tests for advanced fibrosis in patients with NAFLD: an individual patient data meta-analysis. Gut 2021 Epub ahead of print: doi:10.1136/gutjnl-2021-324243
  • Baksi, A., Aggarwal, S. Reply to: Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. OBES SURG (2021). https://doi.org/10.1007/s11695-021-05490-y
  • Mukti Sharma, Sandeep Aggarwal, Umakant Nayar, Naval Kishore Vikram, Anoop Misra, Kalpana Luthra. Differential expression of insulin receptor substrate-1(IRS-1) in visceral and subcutaneous adipose depots of morbidly obese subjects undergoing bariatric surgery in a tertiary care center in north India; SNP analysis and correlation with metabolic profile. Diabetes & Metabolic Syndrome: Clinical Research & Reviews. 2021;15(3). 981-986 ISSN 1871-4021, https://doi.org/10.1016/j.dsx.2021.04.014.
  • 29. Thakkar, H., Vincent, V., Sukhla, S---- Aggarwal S -- et al. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr 13, 46 (2021). https://doi.org/10.1186/s13098-021-00662-3
  • Jain S, Baksi A, Kumar A, Aggarwal S. Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. Obes Surg. 2021 Mar 10. doi: 10.1007/s11695-021-05322-z. Epub ahead of print. PMID: 33694055.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 Jan 19. doi: 10.1007/s11695-020-05162-3. Epub ahead of print. PMID: 33469860.
  • Petroff D, Blank V, Newsome PN, Shalimar, Voican CS, Thiele M, -------, Aggarwal S, et al. Assessment of hepatic steatosis by controlled attenuation parameter using the M and XL probes: an individual patient data meta-analysis. Lancet Gastroenterol Hepatol. 2021 Jan 15:S2468-1253(20)30357-5. doi: 10.1016/S2468-1253(20)30357-5. Epub ahead of print. PMID: 33460567.
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, et al The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Jan 12. doi: 10.1007/s00464-020-08216-w. Epub ahead of print. PMID: 33433676.
  • Agarwal L, Sahu AK, Baksi A, Agarwal A, Aggarwal S, Safety of Metabolic and Bariatric Surgery in Obese Patients with Liver Cirrhosis: A Systematic Review and Meta-analysis, Surgery for Obesity and Related Diseases (2020), doi: https://doi.org/10.1016/j.soard.2020.11.004
  • Sachan A, Singh A, Shukla S, Aggarwal S, Mir I, Yadav R. Serum Adipocytokines Levels and Their Association with Insulin Sensitivity in Morbidly Obese Individuals Undergoing Bariatric Surgery. J Obes Metab Syndr. 2020 Dec 30;29(4):303-312. doi: 10.7570/jomes20090. PMID: 33380577; PMCID: PMC7789018.
  • Kaul, A., Kumar, A., Baksi, A. Aggarwal S. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc (2020). https://doi.org/10.1007/s00464-020-08088-0
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2020 Nov 24;. doi: 10.1111/jgh.15358. [Epub ahead of print] PubMed PMID: 33232525.
  • Amit Bhambri, Vitish Singla, Aashir Kaul, Shalimar, Lokesh Kashyap, Sandeep Aggarwal. Surgical management of super‐super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian Journal of Endoscopic Surgery. First published: 22 October 2020
  • https://doi.org/10.1111/ases.12882
  • Aggarwal, S., Baksi, A. & Kamtam, D.N.H. Reply to: Incidence of Marginal Ulcers After Gastric Bypass Seems to Be Inversely Related to the Duration of Prophylaxis with Proton Pump Inhibitors. OBES SURG (2020). https://doi.org/10.1007/s11695-020-05051-9
  • Agarwal, L., Aggarwal, S., Shalimar et al. Bariatric Surgery in Nonalcoholic Fatty Liver Disease (NAFLD): Impact Assessment Using Paired Liver Biopsy and Fibroscan. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04977-4
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2020 Sep 19. doi: 10.4103/jmas.JMAS_19_20. Epub ahead of print. PMID: 32964893.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2020 Sep 12. doi: 10.4103/jmas.JMAS_167_19. Epub ahead of print. PMID: 32964884.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, et al. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PMID: 32964881.
  • Singla V, Aggarwal S, Aggarwal S, Gupta M, Singh D. Correlation of weight loss with residual gastric volume on computerized tomography in patients undergoing sleeve gastrectomy: A systematic review. Clin Obes. 2020 Oct;10(5):e12394. doi: 10.1111/cob.12394. Epub 2020 Aug 7. PMID: 32767720.
  • Yadav R, Aggarwal S, Singh A. SARS-CoV-2-host dynamics: Increased risk of adverse outcomes of COVID-19 in obesity. Diabetes Metab Syndr. 2020 Sep-Oct;14(5):1355-1360. doi: 10.1016/j.dsx.2020.07.030. Epub 2020 Jul 21. PMID: 32755835; PMCID: PMC7372253.
  • Pouwels S, Omar I, Aggarwal S, Aminian A, Angrisani L, Balibrea JM, et al. The First Modified Delphi Consensus Statement for Resuming Bariatric and Metabolic Surgery in the COVID-19 Times. Obes Surg. 2020 Aug 1:1–6. doi: 10.1007/s11695-020-04883-9. Epub ahead of print. PMID: 32740826; PMCID: PMC7395568
  • Baksi A, Kamtam DNH, Aggarwal S, Ahuja V, Kashyap L, Shende DR. Should Surveillance Endoscopy Be Routine After One Anastomosis Gastric Bypass to Detect Marginal Ulcers: Initial Outcomes in a Tertiary Referral Centre. Obes Surg. 2020 Jul 27. doi: 10.1007/s11695-020-04864-y. Epub ahead of print. PMID: 32720263.
  • Kaul, A., Singla, V., Baksi, A. et al. Safety and Efficacy of Bariatric Surgery in Advanced Liver Fibrosis. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04827-3
  • Aggarwal, S., Mahawar, K., Khaitan, M. et al. Obesity and Metabolic Surgery Society of India (OSSI) Recommendations for Bariatric and Metabolic Surgery Practice During the COVID-19 Pandemic. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04940-
  • Khan WA, Singla V, Aggarwal S, Gupta Y. Outcome of Bariatric Surgery on Hypothyroidism: Experience from a Tertiary Care Centre in India. April 2020. Surgery for Obesity and Related Diseases. DOI: 10.1016/j.soard.2020.03.035
  • Singh D, Arumalla K, Aggarwal S, Singla V, Ganie A, Malhotra N. Impact of Bariatric Surgery on Clinical, Biochemical, and Hormonal Parameters in Women with Polycystic Ovary Syndrome (PCOS). Obes Surg. 2020 Jun;30(6):2294-2300. doi: 10.1007/s11695-020-04487-3. PubMed PMID: 32088855.
  • Shalimar, Kumar R, Rout G, Kumar R, Yadav R, Das P, Aggarwal S, Gunjan D, Saraya A, Nayak B. Body mass index-based controlled attenuation parameter cut-offs for assessment of hepatic steatosis in non-alcoholic fatty liver disease. Indian J Gastroenterol. 2020 Feb;39(1):32-41. doi: 10.1007/s12664-019-00991-2. Epub 2020 Mar 17. PubMed PMID: 32185692.
  • Singla V, Aggarwal S, Singh B, Tharun G, Katiyar V, Bhambri A. Outcomes in Super Obese Patients Undergoing One Anastomosis Gastric Bypass or Laparoscopic Sleeve Gastrectomy. Obes Surg. 2019 Apr;29(4):1242-1247. doi: 10.1007/s11695-018-03673-8. PubMed PMID: 30656569.
  • Singla V, Gattu T, Aggarwal S, Bhambri A, Agarwal S. Evaluation of Epworth Sleepiness Scale to Predict Obstructive Sleep Apnea in Morbidly Obese Patients and Increasing Its Utility. J Laparoendosc Adv Surg Tech A. 2019 Mar;29(3):298-302. doi: 10.1089/lap.2018.0329. Epub 2018 Aug 15. PubMed PMID: 30109974. Vincent V, Thakkar H, Aggarwal S, Mridha AR, Ramakrishnan L, Singh A. ATP-binding cassette transporter A1 (ABCA1) expression in adipose tissue and its modulation with insulin resistance in obesity. Diabetes Metab Syndr Obes. 2019;12:275-284. doi: 10.2147/DMSO.S186565. eCollection 2019. PubMed PMID: 30881070; PubMed Central PMCID: PMC6395069.
  • Aggarwal S, Bhambri A, Singla V, Dash NR, Sharma A. Adenocarcinoma of oesophagus involving gastro-oesophageal junction following mini-gastric bypass/one anastomosis gastric bypass. J Minim Access Surg. 2019 Feb 18;. doi: 10.4103/jmas.JMAS_320_18. [Epub ahead of print] PubMed PMID: 30777997; PubMed Central PMCID: PMC7176000.
  • Arumalla K, Singla V, Aggarwal S, Garg H, Goel R, Katiyar V. Outcomes in morbidly obese adolescent patients undergoing laparoscopic sleeve gastrectomy in the Indian subcontinent: A retrospective review. J Minim Access Surg. 2019 Jan-Mar;15(1):31-36. doi: 10.4103/jmas.JMAS_143_17. PubMed PMID: 29483370; PubMed Central PMCID: PMC6293674.
  • 58. Singla V, Aggarwal S, Garg H, Kashyap L, Shende DR, Agarwal S. Outcomes in Super Obese Patients Undergoing Laparoscopic Sleeve Gastrectomy. J Laparoendosc Adv Surg Tech A. 2018 Mar;28(3):256-262. doi: 10.1089/lap.2017.0536. Epub 2017 Nov 3. PubMed PMID: 29099314.
  • 59. Garg H, Aggarwal S, Shalimar, Yadav R, Datta Gupta S, Agarwal L, Agarwal S. Utility of transient elastography (fibroscan) and impact of bariatric surgery on nonalcoholic fatty liver disease (NAFLD) in morbidly obese patients. Surg Obes Relat Dis. 2018 Jan;14(1):81-91. doi: 10.1016/j.soard.2017.09.005. Epub 2017 Sep 11. PubMed PMID: 29126863.
  • 60. Garg H, Aggarwal S, Misra MC, Priyadarshini P, Swami A, Kashyap L, Jaiswal R. Mid to long term outcomes of Laparoscopic Sleeve Gastrectomy in Indian population: 3-7 year results - A retrospective cohort study. Int J Surg. 2017 Dec;48:201-209. doi: 10.1016/j.ijsu.2017.10.076. Epub 2017 Nov 6. PubMed PMID: 29122706.
  • Priyadarshini P, Singh VP, Aggarwal S, Garg H, Sinha S, Guleria R. Impact of bariatric surgery on obstructive sleep apnoea-hypopnea syndrome in morbidly obese patients. J Minim Access Surg. 2017 Oct-Dec;13(4):291-295. doi: 10.4103/jmas.JMAS_5_17. PubMed PMID: 28872099; PubMed Central PMCID: PMC5607797.
  • Garg H, Priyadarshini P, Aggarwal S, Agarwal S, Chaudhary R. Comparative study of outcomes following laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy in morbidly obese patients: A case control study. World J Gastrointest Endosc. 2017 Apr 16;9(4):162-170. doi: 10.4253/wjge.v9.i4.162. PubMed PMID: 28465782; PubMed Central PMCID: PMC5394722.
  • Garg H, Vigneshwaran B, Aggarwal S, Ahuja V. Impact of concomitant laparoscopic sleeve gastrectomy and hiatal hernia repair on gastro-oesophageal reflux disease in morbidly obese patients. J Minim Access Surg. 2017 Apr-Jun;13(2):103-108. doi: 10.4103/0972-9941.201730. PubMed PMID: 28281472; PubMed Central PMCID: PMC5363114.
  • Vigneshwaran B, Wahal A, Aggarwal S, Priyadarshini P, Bhattacharjee H, Khadgawat R, Yadav R. Impact of Sleeve Gastrectomy on Type 2 Diabetes Mellitus, Gastric Emptying Time, Glucagon-Like Peptide 1 (GLP-1), Ghrelin and Leptin in Non-morbidly Obese Subjects with BMI 30-35.0 kg/m2: a Prospective Study. Obes Surg. 2016 Dec;26(12):2817-2823. doi: 10.1007/s11695-016-2226-9. PubMed PMID: 27185177.
  • Sharma SK, Katoch VM, Mohan A, Kadhiravan T, Elavarasi A, Ragesh R, Nischal N, Sethi P, Behera D, Bhatia M, Ghoshal AG, Gothi D, Joshi J, Kanwar MS, Kharbanda OP, Kumar S, Mohapatra PR, Mallick BN, Mehta R, Prasad R, Sharma SC, Sikka K, Aggarwal S, Shukla G, Suri JC, Vengamma B, Grover A, Vijayan VK, Ramakrishnan N, Gupta R. Consensus and evidence-based Indian initiative on obstructive sleep apnea guidelines 2014 (first edition). Lung India. 2015 Jul-Aug;32(4):422-34. doi: 10.4103/0970-2113.159677. PubMed PMID: 26180408; PubMed Central PMCID: PMC4502224.
  • Mahawar KK, Aggarwal S, Carr WR, Jennings N, Balupuri S, Small PK. Consensus statements and bariatric surgery. Obes Surg. 2015 Jun;25(6):1063-5. doi: 10.1007/s11695-015-1606-x. PubMed PMID: 25680578.
  • Aggarwal S, Sharma AP, Kumar R, Anand S. Totally Robotic Roux-en-Y Gastric Bypass: Technique. Indian J Surg. 2015 Apr;77(2):164-6. doi: 10.1007/s12262-013-0948-7. Epub 2013 Jul 20. PubMed PMID: 26139977; PubMed Central PMCID: PMC4484530.
  • Aggarwal S, Modi S, Jose T. Laparoscopic sleeve gastrectomy leads to reduction in thyroxine requirement in morbidly obese patients with hypothyroidism. World J Surg. 2014 Oct;38(10):2628-31. doi: 10.1007/s00268-014-2646-4. PubMed PMID: 24844659.
  • Aggarwal S, Uniyal M. Bariatric surgery: An overview. Natl Med J India. 2014 Sep-Oct;27(5):261-6. Review. PubMed PMID: 26037426.
  • Sharma A, Aggarwal S, Ahuja V, Bal C. Evaluation of gastroesophageal reflux before and after sleeve gastrectomy using symptom scoring, scintigraphy, and endoscopy. Surg Obes Relat Dis. 2014 Jul-Aug;10(4):600-5. doi: 10.1016/j.soard.2014.01.017. Epub 2014 Jan 28. PubMed PMID: 24837563.
  • Aggarwal S, Sharma AP, Ramaswamy N. Outcome of laparoscopic sleeve gastrectomy with and without staple line oversewing in morbidly obese patients: a randomized study. J Laparoendosc Adv Surg Tech A. 2013 Nov;23(11):895-9. doi: 10.1089/lap.2013.0137. Epub 2013 Sep 28. PubMed PMID: 24073838.
  • Aggarwal S, Bhattacharjee H, Chander Misra M. Practice of routine intraoperative leak test during laparoscopic sleeve gastrectomy should not be discarded. Surg Obes Relat Dis. 2011 Sep-Oct;7(5):e24-5. doi: 10.1016/j.soard.2011.03.013. Epub 2011 Apr 15. PubMed PMID: 21616724.
  • Misra A, Chowbey P, Makkar BM, Vikram NK, Wasir JS, Chadha D, Joshi SR, Sadikot S, Gupta R, Gulati S, Munjal YP. Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians and recommendations for physical activity, medical and surgical management. J Assoc Physicians India. 2009 Feb;57:163-70. Review. PubMed PMID: 19582986.
  • Aggarwal S, Kini SU, Herron DM. Laparoscopic sleeve gastrectomy for morbid obesity: a review. Surg Obes Relat Dis. 2007 Mar-Apr;3(2):189-94. doi: 10.1016/j.soard.2006.10.013. Review. PubMed PMID: 17386400.

    • Overview

  • Dr. Sandeep Aggarwal attended medical school at All India Institute of Medical Sciences (AIIMS), New Delhi and completed his Masters in Surgery (MS) followed by Senior- Residency from AIIMS. He also completed a 1-year Research fellowship at Mount Sinai School of Medicine in New York, USA and a 4 month period at Homerton University, London, UK as a Commonwealth Fellow where he was trained in Bariatric Surgery. He has been a Faculty member in the Department of Surgical Disciplines at AIIMS since 1999 and was head of Surgery Unit II till June 2024. He is the foremost Bariatric Surgeon in Delhi. 

  • Dr. Sandeep is a renowned Laparoscopic, Bariatric, GI and Renal Transplant Surgeon in Delhi with more than 30 years of surgical experience. He is the chairman of the Institute of Bariatric, Minimal Access, GI and Robotic Surgery. Dr. Sandeep is widely recognized as a global leader in the field of Bariatric surgery having pioneered and nurtured this specialty in the public sector in India through his excellent clinical and research work in this field. He has performed more than 1300 bariatric surgery procedures, more than 400 renal transplants and more than 10000 laparoscopic surgical procedures including complex GI surgical procedures, adrenalectomy, splenectomy, hernias etc. 

  • Dr. Sandeep is an active researcher with more than 140 publications and several book chapters to his credit. He is a dedicated teacher, has trained several residents and fellows, performed live surgery at several workshops and has delivered more than 200 invited lectures at various national and international conferences. Dr. Sandeep holds editorial positions in several reputed journals including Editor of Journal of Minimal Access Surgery (JMAS). He has been invited as an expert on several Doordarshan health programs and is frequently quoted in media (both print and electronic) on bariatric surgery topics. Dr. Sandeep has been a Convenor/member of several expert committees. He was awarded the Best Researcher Award by the Indian Association of Gastrointestinal Endo Surgeons (IAGES) in the year 2020.

    Talks & Publications

  • List of Important Publications (Full Papers)
  • For complete list
  • Pubmed:Click Here
  • ORCID: Click Here
  • Chapter in Books
  • Sandeep Aggarwal, Mehul Gupta, Vitish Singla, Michel Gagner. LSG: The Tech-nique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: Second Edition, Publisher: Springer, Editor: Sanjay Agrawal
  • Sandeep Aggarwal, Vitish Singla. Current Status of One Anastomosis Gastric By-pass. Chapter 12 in IAGES Recent Advances in Minimal Access Surgery 2, Edition: Second, Publisher: Jaypee Brothers. Editor: Subhash Khanna
  • Sandeep Aggarwal, Vitish Singla, Devender Singh, Amit Bhambri, Prasanna Rama-na. GI Complications in Bariatric Surgery in Management of Nutritional and Meta-bolic Complications of Bariatric Surgery. Publisher: Springer Nature. Editors: Aparna Govil Bhasker, Nimisha Kantharia
  • Sandeep Aggarwal, Pratyusha Priyadarshini, Michel Gagner. LSG: The Technique. Chapter In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edi-tion: First Edition, Publisher: Springer, Editors: Sanjay Agrawal, pp.247-57 . DOI: 10.1007/978-3-319-04343-2
  • Sandeep Aggarwal · Pratyusha Priyadarshini · Sanjay Agrawal. Current Concepts in Bariatric Surgery: A Review. Chapter in GI Surgery Annual. Editor: T K Chatto-padhay. pp 2016
  • Harshit Garg, Sandeep Aggarwal. Bariatric Surgery: Current Concepts in Roshan Lall Gupta's Recent Advances in Surgery – 14, Publisher: Jaypee, Editor: Puneet, pp: 217-236, · Chapter · Nov 2015
  • Full papers in Indexed Journals
  • Singh, B., Saikaustubh, Y., Singla, V. et al. One Anastomosis Gastric Bypass (OAGB) vs Roux en Y Gastric Bypass (RYGB) for Remission of T2DM in Patients with Morbid Obesity: a Randomized Controlled Trial. OBES SURG 33, 1218–1227 (2023). https://doi.org/10.1007/s11695-023-06515-4
  • Umang Arora1 Sagnik Biswas1 Sandeep Aggarwal1 Ajay Duseja2,* Shalimar1,* MASLD screening and diagnostic algorithms are interchangeable with existing NAFLD literature. Journal of Hepatology, February 2024. vol. 80 j e51–e91.
  • Sai Divya Yadavalli, Arun Kumar, MS, MCh, Vitish Singla, MS, MCh, Venu Madhav Jarapala, MBBS, MS, Vineet Ahuja, MD, DM, Surabhi Vyas, MD, DNB, and Sandeep Aggarwal, MS, FACS. Incidence of Barrett's Esophagus Following Sleeve Gastrectomy in Southeast Asian Population. Journal of Laparoendoscopic & Advanced Surgical Techniques. 2024;34(2):127-34
  • Sachan A, Aggarwal S, Pol MM, Singh A, Yadav R. Expression analysis of MMP14: Key enzyme action in modulating visceral adipose tissue plasticity in patients with obesity. Clinical Obesity. 2023;13(5):e12607. doi:10.1111/cob.12607
  • Elhence A, Anand A, Biswas S, Vaishnav M, Yadav R, Das P, ---- Agarwal S, etal. Compensated Advanced Chronic Liver Disease in Nonalcoholic Fatty Liver Disease: Two-Step Strategy is Better than Baveno Criteria. Dig Dis Sci 2023; 68:1016–1025
  • Umang Arora, Ritik M Goyal, Levin K J The-----Sandeep Aggarwal, Narendra Choudhary, Prajna Anirvan, Shivaram P Singh, Arka De, Ajay Duseja, Shalimar. Poor Performance of Non-Invasive Tests for Advanced Fibrosis in Nonalcoholic Fatty Liver Disease: A Multicentric Asian Study. Dig Dis Sci 2023; 68: 4485–4498.
  • Kumar A, Madhav JV, Singla V, Monga S, Aggarwal S. Concomitant Hiatal Hernia Repair With Sleeve Gastrectomy: Impact on Gastroesophageal Reflux? Surg Laparosc Endosc Percutan Tech. 2023 Oct 1;33(5):435-439. doi: 10.1097/SLE.0000000000001216. PMID: 37671614.
  • Singla V, Gupta A, Gupta A, Monga S, Kumar A, Chekuri R, Gupta M, Kashyap L, Shalimar, Aggarwal S. Outcomes of Laparoscopic Sleeve Gastrectomy (LSG) vs One-Anastomosis Gastric Bypass (OAGB) in Patients with Super-Super Obesity (BMI ≥ 60 kg/m2). Obes Surg. 2023 Nov 24. doi: 10.1007/s11695-023-06960-1.
  • Bhasker, Aparna Govil; Tantia, Om1; Khaitan, Manish2; Wadhawan, Randeep3; Kular, K. S.4; Baig, Sarfaraz Jalil5; Shah, Sumeet6; ---------Aggarwal, Sandeep17; et al. A Delphi Consensus on the Surgical Technique of Laparoscopic Sleeve Gastrectomy: An Obesity and Metabolic Surgery Society of India Initiative. Journal of Bariatric Surgery 2(2):p 79-84, May–Aug 2023. | DOI: 10.4103/jbs.jbs_7_23
  • Gupta, M., Singla, V., Kumar, A. et al. Response to Letter to the Editor: Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic Review and Meta-analysis. OBES SURG. 2023; 33:372–373
  • Gupta M, Singla V, Kumar A, Chekuri R, Kaustubh YS, Aggarwal S. Banded Sleeve Gastrectomy vs Non-banded Sleeve Gastrectomy: a Systematic review and Meta-analysis. Obes Surg. 2022 Aug;32(8):2744-2752
  • Omar I, Miller K, Madhok B, Amr B, Singhal R, Graham Y, Pouwels S, Abu Hilal M, Aggarwal S, et al. The first international Delphi consensus statement on Laparoscopic Gastrointestinal surgery. Int J Surg. 2022 Aug;104:106766. doi: 10.1016/j.ijsu.2022.106766. Epub 2022 Jul 13. PubMed PMID: 35842089.
  • Singla V, Kumar A, Gupta M, Manohar M, Monga S, Agarwal S, Sharma AK, Aggarwal S. Gastrointestinal Quality of Life in Morbidly Obese Patients Undergoing One Anastomosis Gastric Bypass (OAGB): Derivation of a ""Mini GIQLI"" Score. Obes Surg. 2022 Jul;32(7):2332-2340.
  • Arumugaswamy PR, Singla V, Singh P, Kumar R, Aggarwal S. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surg Endosc. 2022 Jul;36(7):4771-4779
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, Angrisani L, Badiuddin FM, Balibrea JM, Bashir A, Behrens E, Bhatia K, Biertho L, Biter LU, Dargent J, De Luca M, DeMaria E, Elfawal MH, Fried M, Gawdat KA, Graham Y, Herrera MF, Himpens JM, Hussain FA, Kasama K, Kerrigan D, Kow L, Kristinsson J, Kurian M, Liem R, Lutfi RE, Menon V, Miller K, Noel P, Ospanov O, Ozmen MM, Peterli R, Ponce J, Prager G, Prasad A, Raj PP, Rodriguez NR, Rosenthal R, Sakran N, Santos JN, Shabbir A, Shikora SA, Small PK, Taylor CJ, Wang C, Weiner RA, Wylezol M, Yang W, Aminian A. The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Dec;35(12):7027-7033. doi: 10.1007/s00464-020-08216-w. Epub 2021 Jan 12. PubMed PMID: 33433676.
  • Kaul A, Kumar A, Baksi A, Singla V, Aggarwal S, Gulati G, Narang R, Kashyap L. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc. 2021 Nov;35(11):6006-6012. doi: 10.1007/s00464-020-08088-0. Epub 2020 Oct 13. PubMed PMID: 33048234.
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2021 Oct-Dec;17(4):462-469. doi: 10.4103/jmas.JMAS_19_20. PubMed PMID: 32964893; PubMed Central PMCID: PMC8486063.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2021 Jul-Sep;17(3):322-328. doi: 10.4103/jmas.JMAS_167_19. PubMed PMID: 32964884; PubMed Central PMCID: PMC8270047.
  • Bhambri A, Singla V, Kaul A, Shalimar, Kashyap L, Aggarwal S. Surgical management of super-super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian J Endosc Surg. 2021 Jul;14(3):570-573. doi: 10.1111/ases.12882. Epub 2020 Oct 22. PubMed PMID: 33094552.
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2021 May;36(5):1309-1316. doi: 10.1111/jgh.15358. Epub 2020 Dec 16. PubMed PMID: 33232525.1.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 May;31(5):2344-2345. doi: 10.1007/s11695-020-05162-3. Epub 2021 Jan 19.
  • Thakkar H, Vincent V, Shukla S, Sra M, Kanga U, Aggarwal S, Singh A. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr. 2021 Apr 17;13(1):46. doi: 10.1186/s13098-021-00662-3.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, Bindal V, Katakwar A, Vennapusa A, Bhasker AG, Peters A, Goel D, Bedi D, Palep J, Kona L, Mehrotra M, Baijal M, Bhandari M, Dukkipati N, Wadhawan R, Baig S, Pattanshetti S, Ugale S. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PubMed PMID: 32964881;
  • Singh, D., Baksi, A., Ramana, P. et al. Five-Year Outcomes of Sleeve Gastrectomy in Patients with Class I Obesity and Type 2 Diabetes Mellitus. OBES SURG (2021).
  • Prasanna Ramana Arumugaswamy, Vitish Singla, · Prabhjot Singh, Rajeev Kumar, Sandeep Aggarwal. Impact of bariatric surgery on urinary incontinence in morbidly obese individuals. Surgical Endoscopy (2021) https://doi.org/10.1007/s00464-021-08818-y
  • Mózes FE, Lee JA, Selvaraj EA,-------- Aggarwal S, ---- et al. Diagnostic accuracy of non-invasive tests for advanced fibrosis in patients with NAFLD: an individual patient data meta-analysis. Gut 2021 Epub ahead of print: doi:10.1136/gutjnl-2021-324243
  • Baksi, A., Aggarwal, S. Reply to: Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. OBES SURG (2021). https://doi.org/10.1007/s11695-021-05490-y
  • Mukti Sharma, Sandeep Aggarwal, Umakant Nayar, Naval Kishore Vikram, Anoop Misra, Kalpana Luthra. Differential expression of insulin receptor substrate-1(IRS-1) in visceral and subcutaneous adipose depots of morbidly obese subjects undergoing bariatric surgery in a tertiary care center in north India; SNP analysis and correlation with metabolic profile. Diabetes & Metabolic Syndrome: Clinical Research & Reviews. 2021;15(3). 981-986 ISSN 1871-4021, https://doi.org/10.1016/j.dsx.2021.04.014.
  • 29. Thakkar, H., Vincent, V., Sukhla, S---- Aggarwal S -- et al. Improvements in cholesterol efflux capacity of HDL and adiponectin contribute to mitigation in cardiovascular disease risk after bariatric surgery in a cohort with morbid obesity. Diabetol Metab Syndr 13, 46 (2021). https://doi.org/10.1186/s13098-021-00662-3
  • Jain S, Baksi A, Kumar A, Aggarwal S. Inclusion of Orogastric Tube in the Staple Line During Laparoscopic Roux-en-Y Gastric Bypass: an Avoidable Complication. Obes Surg. 2021 Mar 10. doi: 10.1007/s11695-021-05322-z. Epub ahead of print. PMID: 33694055.
  • Kumar A, Baksi A, Yadavalli SD, Aggarwal S. Incidental Jejunal Lesion Necessitating Intraoperative Change of Plan During Bariatric Surgery: a Video Case Report. Obes Surg. 2021 Jan 19. doi: 10.1007/s11695-020-05162-3. Epub ahead of print. PMID: 33469860.
  • Petroff D, Blank V, Newsome PN, Shalimar, Voican CS, Thiele M, -------, Aggarwal S, et al. Assessment of hepatic steatosis by controlled attenuation parameter using the M and XL probes: an individual patient data meta-analysis. Lancet Gastroenterol Hepatol. 2021 Jan 15:S2468-1253(20)30357-5. doi: 10.1016/S2468-1253(20)30357-5. Epub ahead of print. PMID: 33460567.
  • Mahawar KK, Omar I, Singhal R, Aggarwal S, Allouch MI, Alsabah SK, et al The first modified Delphi consensus statement on sleeve gastrectomy. Surg Endosc. 2021 Jan 12. doi: 10.1007/s00464-020-08216-w. Epub ahead of print. PMID: 33433676.
  • Agarwal L, Sahu AK, Baksi A, Agarwal A, Aggarwal S, Safety of Metabolic and Bariatric Surgery in Obese Patients with Liver Cirrhosis: A Systematic Review and Meta-analysis, Surgery for Obesity and Related Diseases (2020), doi: https://doi.org/10.1016/j.soard.2020.11.004
  • Sachan A, Singh A, Shukla S, Aggarwal S, Mir I, Yadav R. Serum Adipocytokines Levels and Their Association with Insulin Sensitivity in Morbidly Obese Individuals Undergoing Bariatric Surgery. J Obes Metab Syndr. 2020 Dec 30;29(4):303-312. doi: 10.7570/jomes20090. PMID: 33380577; PMCID: PMC7789018.
  • Kaul, A., Kumar, A., Baksi, A. Aggarwal S. Impact of bariatric surgery on carotid intima-medial thickness and cardiovascular risk: results of a prospective study. Surg Endosc (2020). https://doi.org/10.1007/s00464-020-08088-0
  • Anand A, Elhence A, Vaishnav M, Singh AA, Rajput MS, Banyal V, Jindal V, Pathak P, Kumar P, Nayak B, Yadav R, Das P, Garg H, Agarwal L, Aggarwal S, Kumar R, Shalimar. FibroScan-aspartate aminotransferase score in an Asian cohort of non-alcoholic fatty liver disease and its utility in predicting histological resolution with bariatric surgery. J Gastroenterol Hepatol. 2020 Nov 24;. doi: 10.1111/jgh.15358. [Epub ahead of print] PubMed PMID: 33232525.
  • Amit Bhambri, Vitish Singla, Aashir Kaul, Shalimar, Lokesh Kashyap, Sandeep Aggarwal. Surgical management of super‐super obesity with grade III esophageal varices and liver cirrhosis: The ultimate challenge. Asian Journal of Endoscopic Surgery. First published: 22 October 2020
  • https://doi.org/10.1111/ases.12882
  • Aggarwal, S., Baksi, A. & Kamtam, D.N.H. Reply to: Incidence of Marginal Ulcers After Gastric Bypass Seems to Be Inversely Related to the Duration of Prophylaxis with Proton Pump Inhibitors. OBES SURG (2020). https://doi.org/10.1007/s11695-020-05051-9
  • Agarwal, L., Aggarwal, S., Shalimar et al. Bariatric Surgery in Nonalcoholic Fatty Liver Disease (NAFLD): Impact Assessment Using Paired Liver Biopsy and Fibroscan. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04977-4
  • Gupta M, Aggarwal S, Bhambri A, Singla V, Chaudhary R. Impact of bariatric surgery on type 2 diabetes in morbidly obese patients and its correlation with pre-operative prediction scores. J Minim Access Surg. 2020 Sep 19. doi: 10.4103/jmas.JMAS_19_20. Epub ahead of print. PMID: 32964893.
  • Bhambri A, Singla V, Aggarwal S, Kaul A, Gupta M, Chaudhary R. Correlation between pre-operative endoscopic findings with reflux symptom score for gastro-oesophageal reflux disease in bariatric patients. J Minim Access Surg. 2020 Sep 12. doi: 10.4103/jmas.JMAS_167_19. Epub ahead of print. PMID: 32964884.
  • Goel R, Nasta AM, Goel M, Prasad A, Jammu G, Fobi M, Ismail M, Raj P, Palaniappan R, Aggarwal S, et al. Complications after bariatric surgery: A multicentric study of 11,568 patients from Indian bariatric surgery outcomes reporting group. J Minim Access Surg. 2021 Apr-Jun;17(2):213-220. doi: 10.4103/jmas.JMAS_12_20. PMID: 32964881.
  • Singla V, Aggarwal S, Aggarwal S, Gupta M, Singh D. Correlation of weight loss with residual gastric volume on computerized tomography in patients undergoing sleeve gastrectomy: A systematic review. Clin Obes. 2020 Oct;10(5):e12394. doi: 10.1111/cob.12394. Epub 2020 Aug 7. PMID: 32767720.
  • Yadav R, Aggarwal S, Singh A. SARS-CoV-2-host dynamics: Increased risk of adverse outcomes of COVID-19 in obesity. Diabetes Metab Syndr. 2020 Sep-Oct;14(5):1355-1360. doi: 10.1016/j.dsx.2020.07.030. Epub 2020 Jul 21. PMID: 32755835; PMCID: PMC7372253.
  • Pouwels S, Omar I, Aggarwal S, Aminian A, Angrisani L, Balibrea JM, et al. The First Modified Delphi Consensus Statement for Resuming Bariatric and Metabolic Surgery in the COVID-19 Times. Obes Surg. 2020 Aug 1:1–6. doi: 10.1007/s11695-020-04883-9. Epub ahead of print. PMID: 32740826; PMCID: PMC7395568
  • Baksi A, Kamtam DNH, Aggarwal S, Ahuja V, Kashyap L, Shende DR. Should Surveillance Endoscopy Be Routine After One Anastomosis Gastric Bypass to Detect Marginal Ulcers: Initial Outcomes in a Tertiary Referral Centre. Obes Surg. 2020 Jul 27. doi: 10.1007/s11695-020-04864-y. Epub ahead of print. PMID: 32720263.
  • Kaul, A., Singla, V., Baksi, A. et al. Safety and Efficacy of Bariatric Surgery in Advanced Liver Fibrosis. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04827-3
  • Aggarwal, S., Mahawar, K., Khaitan, M. et al. Obesity and Metabolic Surgery Society of India (OSSI) Recommendations for Bariatric and Metabolic Surgery Practice During the COVID-19 Pandemic. OBES SURG (2020). https://doi.org/10.1007/s11695-020-04940-
  • Khan WA, Singla V, Aggarwal S, Gupta Y. Outcome of Bariatric Surgery on Hypothyroidism: Experience from a Tertiary Care Centre in India. April 2020. Surgery for Obesity and Related Diseases. DOI: 10.1016/j.soard.2020.03.035
  • Singh D, Arumalla K, Aggarwal S, Singla V, Ganie A, Malhotra N. Impact of Bariatric Surgery on Clinical, Biochemical, and Hormonal Parameters in Women with Polycystic Ovary Syndrome (PCOS). Obes Surg. 2020 Jun;30(6):2294-2300. doi: 10.1007/s11695-020-04487-3. PubMed PMID: 32088855.
  • Shalimar, Kumar R, Rout G, Kumar R, Yadav R, Das P, Aggarwal S, Gunjan D, Saraya A, Nayak B. Body mass index-based controlled attenuation parameter cut-offs for assessment of hepatic steatosis in non-alcoholic fatty liver disease. Indian J Gastroenterol. 2020 Feb;39(1):32-41. doi: 10.1007/s12664-019-00991-2. Epub 2020 Mar 17. PubMed PMID: 32185692.
  • Singla V, Aggarwal S, Singh B, Tharun G, Katiyar V, Bhambri A. Outcomes in Super Obese Patients Undergoing One Anastomosis Gastric Bypass or Laparoscopic Sleeve Gastrectomy. Obes Surg. 2019 Apr;29(4):1242-1247. doi: 10.1007/s11695-018-03673-8. PubMed PMID: 30656569.
  • Singla V, Gattu T, Aggarwal S, Bhambri A, Agarwal S. Evaluation of Epworth Sleepiness Scale to Predict Obstructive Sleep Apnea in Morbidly Obese Patients and Increasing Its Utility. J Laparoendosc Adv Surg Tech A. 2019 Mar;29(3):298-302. doi: 10.1089/lap.2018.0329. Epub 2018 Aug 15. PubMed PMID: 30109974. Vincent V, Thakkar H, Aggarwal S, Mridha AR, Ramakrishnan L, Singh A. ATP-binding cassette transporter A1 (ABCA1) expression in adipose tissue and its modulation with insulin resistance in obesity. Diabetes Metab Syndr Obes. 2019;12:275-284. doi: 10.2147/DMSO.S186565. eCollection 2019. PubMed PMID: 30881070; PubMed Central PMCID: PMC6395069.
  • Aggarwal S, Bhambri A, Singla V, Dash NR, Sharma A. Adenocarcinoma of oesophagus involving gastro-oesophageal junction following mini-gastric bypass/one anastomosis gastric bypass. J Minim Access Surg. 2019 Feb 18;. doi: 10.4103/jmas.JMAS_320_18. [Epub ahead of print] PubMed PMID: 30777997; PubMed Central PMCID: PMC7176000.
  • Arumalla K, Singla V, Aggarwal S, Garg H, Goel R, Katiyar V. Outcomes in morbidly obese adolescent patients undergoing laparoscopic sleeve gastrectomy in the Indian subcontinent: A retrospective review. J Minim Access Surg. 2019 Jan-Mar;15(1):31-36. doi: 10.4103/jmas.JMAS_143_17. PubMed PMID: 29483370; PubMed Central PMCID: PMC6293674.
  • 58. Singla V, Aggarwal S, Garg H, Kashyap L, Shende DR, Agarwal S. Outcomes in Super Obese Patients Undergoing Laparoscopic Sleeve Gastrectomy. J Laparoendosc Adv Surg Tech A. 2018 Mar;28(3):256-262. doi: 10.1089/lap.2017.0536. Epub 2017 Nov 3. PubMed PMID: 29099314.
  • 59. Garg H, Aggarwal S, Shalimar, Yadav R, Datta Gupta S, Agarwal L, Agarwal S. Utility of transient elastography (fibroscan) and impact of bariatric surgery on nonalcoholic fatty liver disease (NAFLD) in morbidly obese patients. Surg Obes Relat Dis. 2018 Jan;14(1):81-91. doi: 10.1016/j.soard.2017.09.005. Epub 2017 Sep 11. PubMed PMID: 29126863.
  • 60. Garg H, Aggarwal S, Misra MC, Priyadarshini P, Swami A, Kashyap L, Jaiswal R. Mid to long term outcomes of Laparoscopic Sleeve Gastrectomy in Indian population: 3-7 year results - A retrospective cohort study. Int J Surg. 2017 Dec;48:201-209. doi: 10.1016/j.ijsu.2017.10.076. Epub 2017 Nov 6. PubMed PMID: 29122706.
  • Priyadarshini P, Singh VP, Aggarwal S, Garg H, Sinha S, Guleria R. Impact of bariatric surgery on obstructive sleep apnoea-hypopnea syndrome in morbidly obese patients. J Minim Access Surg. 2017 Oct-Dec;13(4):291-295. doi: 10.4103/jmas.JMAS_5_17. PubMed PMID: 28872099; PubMed Central PMCID: PMC5607797.
  • Garg H, Priyadarshini P, Aggarwal S, Agarwal S, Chaudhary R. Comparative study of outcomes following laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy in morbidly obese patients: A case control study. World J Gastrointest Endosc. 2017 Apr 16;9(4):162-170. doi: 10.4253/wjge.v9.i4.162. PubMed PMID: 28465782; PubMed Central PMCID: PMC5394722.
  • Garg H, Vigneshwaran B, Aggarwal S, Ahuja V. Impact of concomitant laparoscopic sleeve gastrectomy and hiatal hernia repair on gastro-oesophageal reflux disease in morbidly obese patients. J Minim Access Surg. 2017 Apr-Jun;13(2):103-108. doi: 10.4103/0972-9941.201730. PubMed PMID: 28281472; PubMed Central PMCID: PMC5363114.
  • Vigneshwaran B, Wahal A, Aggarwal S, Priyadarshini P, Bhattacharjee H, Khadgawat R, Yadav R. Impact of Sleeve Gastrectomy on Type 2 Diabetes Mellitus, Gastric Emptying Time, Glucagon-Like Peptide 1 (GLP-1), Ghrelin and Leptin in Non-morbidly Obese Subjects with BMI 30-35.0 kg/m2: a Prospective Study. Obes Surg. 2016 Dec;26(12):2817-2823. doi: 10.1007/s11695-016-2226-9. PubMed PMID: 27185177.
  • Sharma SK, Katoch VM, Mohan A, Kadhiravan T, Elavarasi A, Ragesh R, Nischal N, Sethi P, Behera D, Bhatia M, Ghoshal AG, Gothi D, Joshi J, Kanwar MS, Kharbanda OP, Kumar S, Mohapatra PR, Mallick BN, Mehta R, Prasad R, Sharma SC, Sikka K, Aggarwal S, Shukla G, Suri JC, Vengamma B, Grover A, Vijayan VK, Ramakrishnan N, Gupta R. Consensus and evidence-based Indian initiative on obstructive sleep apnea guidelines 2014 (first edition). Lung India. 2015 Jul-Aug;32(4):422-34. doi: 10.4103/0970-2113.159677. PubMed PMID: 26180408; PubMed Central PMCID: PMC4502224.
  • Mahawar KK, Aggarwal S, Carr WR, Jennings N, Balupuri S, Small PK. Consensus statements and bariatric surgery. Obes Surg. 2015 Jun;25(6):1063-5. doi: 10.1007/s11695-015-1606-x. PubMed PMID: 25680578.
  • Aggarwal S, Sharma AP, Kumar R, Anand S. Totally Robotic Roux-en-Y Gastric Bypass: Technique. Indian J Surg. 2015 Apr;77(2):164-6. doi: 10.1007/s12262-013-0948-7. Epub 2013 Jul 20. PubMed PMID: 26139977; PubMed Central PMCID: PMC4484530.
  • Aggarwal S, Modi S, Jose T. Laparoscopic sleeve gastrectomy leads to reduction in thyroxine requirement in morbidly obese patients with hypothyroidism. World J Surg. 2014 Oct;38(10):2628-31. doi: 10.1007/s00268-014-2646-4. PubMed PMID: 24844659.
  • Aggarwal S, Uniyal M. Bariatric surgery: An overview. Natl Med J India. 2014 Sep-Oct;27(5):261-6. Review. PubMed PMID: 26037426.
  • Sharma A, Aggarwal S, Ahuja V, Bal C. Evaluation of gastroesophageal reflux before and after sleeve gastrectomy using symptom scoring, scintigraphy, and endoscopy. Surg Obes Relat Dis. 2014 Jul-Aug;10(4):600-5. doi: 10.1016/j.soard.2014.01.017. Epub 2014 Jan 28. PubMed PMID: 24837563.
  • Aggarwal S, Sharma AP, Ramaswamy N. Outcome of laparoscopic sleeve gastrectomy with and without staple line oversewing in morbidly obese patients: a randomized study. J Laparoendosc Adv Surg Tech A. 2013 Nov;23(11):895-9. doi: 10.1089/lap.2013.0137. Epub 2013 Sep 28. PubMed PMID: 24073838.
  • Aggarwal S, Bhattacharjee H, Chander Misra M. Practice of routine intraoperative leak test during laparoscopic sleeve gastrectomy should not be discarded. Surg Obes Relat Dis. 2011 Sep-Oct;7(5):e24-5. doi: 10.1016/j.soard.2011.03.013. Epub 2011 Apr 15. PubMed PMID: 21616724.
  • Misra A, Chowbey P, Makkar BM, Vikram NK, Wasir JS, Chadha D, Joshi SR, Sadikot S, Gupta R, Gulati S, Munjal YP. Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians and recommendations for physical activity, medical and surgical management. J Assoc Physicians India. 2009 Feb;57:163-70. Review. PubMed PMID: 19582986.
  • Aggarwal S, Kini SU, Herron DM. Laparoscopic sleeve gastrectomy for morbid obesity: a review. Surg Obes Relat Dis. 2007 Mar-Apr;3(2):189-94. doi: 10.1016/j.soard.2006.10.013. Review. PubMed PMID: 17386400.

    • Overview

  • Dr. Sandeep Aggarwal attended medical school at All India Institute of Medical Sciences (AIIMS), New Delhi and completed his Masters in Surgery (MS) followed by Senior- Residency from AIIMS. He also completed a 1-year Research fellowship at Mount Sinai School of Medicine in New York, USA and a 4 month period at Homerton University, London, UK as a Commonwealth Fellow where he was trained in Bariatric Surgery. He has been a Faculty member in the Department of Surgical Disciplines at AIIMS since 1999 and was head of Surgery Unit II till June 2024. He is the foremost Bariatric Surgeon in Delhi. 

  • Dr. Sandeep is a renowned Laparoscopic, Bariatric, GI and Renal Transplant Surgeon in Delhi with more than 30 years of surgical experience. He is the chairman of the Institute of Bariatric, Minimal Access, GI and Robotic Surgery. Dr. Sandeep is widely recognized as a global leader in the field of Bariatric surgery having pioneered and nurtured this specialty in the public sector in India through his excellent clinical and research work in this field. He has performed more than 1300 bariatric surgery procedures, more than 400 renal transplants and more than 10000 laparoscopic surgical procedures including complex GI surgical procedures, adrenalectomy, splenectomy, hernias etc. 

  • Dr. Sandeep is an active researcher with more than 140 publications and several book chapters to his credit. He is a dedicated teacher, has trained several residents and fellows, performed live surgery at several workshops and has delivered more than 200 invited lectures at various national and international conferences. Dr. Sandeep holds editorial positions in several reputed journals including Editor of Journal of Minimal Access Surgery (JMAS). He has been invited as an expert on several Doordarshan health programs and is frequently quoted in media (both print and electronic) on bariatric surgery topics. Dr. Sandeep has been a Convenor/member of several expert committees. He was awarded the Best Researcher Award by the Indian Association of Gastrointestinal Endo Surgeons (IAGES) in the year 2020.

    • Fellowship & Membership

  • Commonwealth Fellow
  • Fellowship of American College of Surgeons (FACS)
  • Fellowship of International College of Laparoscopic Surgeons (FCLS)
  • Fellowship of International Union Against Cancer (UICC)
  • Research Fellow in Division of Laparoscopic Surgery; Mount Sinai School of Medicine, New York, USA. (Dec 2005-Dec 2006)

    • Field of Expertise

  • Bariatric Surgery
  • Hernia Surgery
  • Laparoscopic Upper GI Surgery
  • Solid Organ including Laparoscopic Splenectomy And Adrenalectomy
  • Renal Transplantation

    • Languages Spoken

  • English
  • Hindi

    • Awards & Achievements

  • Best Researcher Award” of the Indian Association of Gastrointestinal Endoscopic Surgeons (IAGES) for the year 2020
  • Obesity Surgery Editors Recognition Award for Distinction in Reviewing 2020
  • Certificate for Commendation at AIIMS Excellence Research Award; Awarded at 3rd AIIMS Research Day held on 30th January 2024
  • Pioneered this speciality of surgery in the government sector in the year 2008. Established and nurtured the specialty of Bariatric Surgery in the Country.
  • Have performed more than 1300 bariatric surgical procedures with excellent results at par with World's best centres
  • Established a dedicated Bariatric Surgery Clinic at AIIMS. Since its establishment thousands of new obese patients have been registered and counselled for weight loss surgery.
  • Instrumental in establishing the 2-year Bariatric Fellowship Program at AIIMS for proper training of surgeons which would help in capacity building
  • Helped start similar programs in other public hospitals in the country and mentored the surgeons at AIIMS Bhatinda, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Lok Nayak Jai Prakash (LNJP) hospital and Lady Hardinge Medical College (LHMC), New Delhi and help them start bariatric surgery in their hospitals.
  • First one to perform bariatric surgery in Bihar at the invitation of the Bihar Chapter of the Association of Surgeons of India (ASI) and hence kick start the program in Bihar.
  • Recognized internationally as an expert in this field. Invited to be Section –editor of an international book authored by the World's leading experts on Bariatric Surgery titled “Obesity, Bariatric and Metabolic Surgery: A Practical Guide”. Contributed a chapter on the Technique of Laparoscopic Sleeve Gastrectomy (LSG), the most popular bariatric surgical procedure.
  • Member of various Expert committees and meetings to develop guidelines for issues related to Bariatric Surgery in India. Nominated member of the executive committee of Obesity and Metabolic Surgery Society of India (OSSI) for a period of three years. Frequently quoted in the national media-both print and electronic. Has been invited as an expert on Doordarshan health shows several times.
  • Convenor for Bariatric Surgery Fellowship of National Board of Examinations
  • Delivered more than 150 invited lectures related to Bariatric Surgery as well as MAS
  • Founder President of the “Foundation for Obesity Research and Metabolic Surgery” (FORMS) - a non-profit non-governmental society registered under the Societies Act for creating awareness and education about Bariatric surgery
  • Organized several workshops and meetings to spread knowledge and skills including Cadaver Courses on Bariatric surgery. Organizing Chairman of the First National Postgraduate CME on Bariatric Surgery held at AIIMS in year 2017 which focused on postgraduate students to fill the gap in medical curriculum.
  • Other Achievements
  • Editor, Journal of Minimal Access Surgery (JMAS), a PubMed indexed journal
  • Member Editorial Board of the prestigious journal- ‘Obesity Surgery’
  • Associate Editor, Journal of Bariatric Surgery
  • Chairman of the Scientific Committee of Obesity & Metabolic Surgery Society of India (OSSI)
  • Past Member of Institutional Ethics Committee (IEC) for Post Graduate Research, AIIMS
  • Past Member of the IEC Sub-committee for Serious Adverse Events (SAE)
  • Member of the SAGES-MIRA Expert Group Meeting for Framing Guidelines for Use of Robots in Surgery held in New York, USA in 2006
  • Section Editor of Section on Laparoscopic Sleeve Gastrectomy In book: Obesity, Bariatric and Metabolic Surgery: A Practical Guide, Edition: First Edition, Publisher: Springer.
  • Co-Chairman of the Expert Group to frame National Guidelines for the Surgical Treatment of Obstructive Sleep Apnea
  • Ex Board member of the Society of Endoscopic and Laparoscopic Surgery of India (SELSI)
  • Member of the committee to finalize rules and package for Bariatric Surgery for CGHS patients, Ministry of Health, GOI

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FAQ's

Patients often seek Dr. Sandeep Aggarwal’s expertise as the Chairman - Manipal Institute of Minimal Access, Bariatric, GI & Robotic Surgery at Manipal Hospitals Dwarka - Delhi. Find expert care with Dr. Sandeep Aggarwal, a leading bariatric surgeon in Delhi at Manipal Hospitals, specializing in weight loss surgery for effective and lasting results.

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