Dr A K Bansal provides comprehensive bariatric (obesity) surgery at Dr Bansal Gastro & Liver Centre, Gomti Nagar Extension and Myra City Hospital, Lucknow. The service covers laparoscopic sleeve gastrectomy, Roux-en-Y gastric bypass, mini-gastric bypass (OAGB) and structured pre- and post-operative multidisciplinary care. Practice follows the IFSO (International Federation for the Surgery of Obesity), IFSO-APC, ASMBS (American Society for Metabolic and Bariatric Surgery) and OSSI (Obesity and Metabolic Surgery Society of India) guidelines.
Obesity surgery — also called bariatric surgery or metabolic surgery — is a group of laparoscopic operations that produce durable weight loss and metabolic improvement in patients with severe obesity. The procedures work through three mechanisms: a degree of restriction in food volume, alteration of gut hormone signalling (most notably ghrelin, GLP-1 and PYY), and — in bypass operations — a small element of malabsorption.
Internationally, bariatric surgery is recognised as the most effective long-term treatment for severe obesity by every major guideline body — the International Federation for the Surgery of Obesity (IFSO), the American Society for Metabolic and Bariatric Surgery (ASMBS), the Obesity and Metabolic Surgery Society of India (OSSI), the American Diabetes Association (ADA) and the NIH. Comparative trials and long-term registry data consistently show greater and more durable weight loss, better resolution of obesity-related comorbidity, and improved survival compared with non-surgical management of severe obesity.
Dr A K Bansal offers the full spectrum of standard bariatric and metabolic procedures, with technique chosen on the basis of patient BMI, comorbidities (especially type 2 diabetes and severe reflux), eating pattern and personal preference, after multidisciplinary evaluation.
Lifestyle and pharmacological treatment remain the foundation of any obesity management plan. However, beyond a certain severity of obesity, hormonal and metabolic adaptations make sustained weight loss extremely difficult with diet alone. Once the body has been in a state of severe obesity for years, the appetite-regulating system defends a higher set-point — patients who lose weight through diet typically regain most of it within 2–5 years.
Bariatric surgery alters this set-point by changing gut hormone signalling and gastric capacity simultaneously. The result is sustained weight loss, durable improvement in many comorbidities (type 2 diabetes, hypertension, OSA, fatty liver, dyslipidaemia, joint disease), and improvements in quality of life. Surgery is not a cosmetic intervention — it is a treatment for a chronic metabolic disease.
Indian eligibility criteria reflect the higher health risk of obesity at lower BMI thresholds in Asian populations. Per the IFSO Asia-Pacific Chapter and OSSI guidance, current Indian thresholds are:
Additional eligibility considerations include age (typically 18–65, with selected exceptions), failure of supervised non-surgical weight management, absence of untreated severe psychiatric illness or active substance misuse, and willingness to commit to lifelong follow-up.
Procedure choice is personalised. Common considerations include:
The decision is made together with the patient after multidisciplinary review.
Modern bariatric care requires a thorough multidisciplinary work-up:
Pre-operative weight loss (typically 5–10% of body weight over 2–4 weeks via a low-calorie/very-low-calorie diet) is encouraged to reduce liver size, decrease abdominal fat, and ease surgical exposure.
All standard bariatric operations are performed laparoscopically under general anaesthesia. Typical hospital stay is 2–3 nights for sleeve gastrectomy and 3–4 nights for gastric bypass. Drains and urinary catheters are removed early. Patients are mobilised on the same day and start clear liquids within 24 hours.
Dietary progression follows a staged plan over 4–6 weeks: clear liquids → full liquids → puréed foods → soft foods → regular textures, under dietitian supervision. Lifelong vitamin and mineral supplementation begins from day 1.
Typical results reported in major bariatric registries (IFSO, ASMBS BSAQIP):
Individual results vary substantially with adherence to diet, physical activity, follow-up and behavioural factors. A degree of weight regain after the second year is common and is addressed through structured follow-up.
Beyond weight loss, bariatric and metabolic surgery produces meaningful improvement in many obesity-related conditions:
Modern bariatric care is structured for lifelong follow-up — this is integral, not optional, to long-term success:
Dr A K Bansal completed his M.Ch Surgical Gastroenterology at SGPGI Lucknow with All India Rank 1. He is Ex Senior Consultant in the Department of Gastrosciences at Medanta Hospital and currently heads the Department of GI Surgery at Myra City Hospital. With 15+ years of surgical experience and 5000+ procedures, his bariatric practice covers the full range of guideline-endorsed procedures.
Bring recent blood tests, prior endoscopy or imaging, and a list of all medications.
Book AppointmentA group of laparoscopic operations that produce durable weight loss and metabolic improvement in severe obesity by restriction, gut hormone change and (in bypass) a degree of malabsorption.
Asian-Indian thresholds (IFSO-APC/OSSI): BMI ≥37.5 without comorbidity; BMI ≥32.5 with significant comorbidity; BMI ≥27.5 with poorly controlled type 2 diabetes.
Laparoscopic sleeve gastrectomy, Roux-en-Y gastric bypass, mini-gastric bypass (OAGB), SADI-S, and intragastric balloon (non-surgical). Choice is individualised.
Typically 60–80% excess weight loss at 1–2 years with sleeve or bypass. Individual results vary with adherence and follow-up.
Bariatric surgery produces sustained remission or substantial improvement of type 2 diabetes in many patients — particularly with shorter diabetes duration. Endorsed by the Diabetes Surgery Summit and ADA.
30-day mortality under 0.3% in experienced centres. Major complications 3–5%. Recognised risks include bleed, leak, DVT/PE, internal hernia, reflux, marginal ulcer and long-term nutritional deficiencies.
Yes. Structured follow-up at 1, 3, 6, 12 months then annually, with blood tests for nutritional status and lifelong multivitamin supplementation. Follow-up is integral to long-term success.