Weight Loss Surgery

Bariatric (weight-loss) surgery is surgery to help substantial, sustained weight loss in people with obesity — particularly when lifestyle and medical treatment have not worked enough and health is at risk. It can reverse type 2 diabetes, sleep apnoea, high blood pressure and fatty liver in many people, and reduce the risk of heart disease and cancer.

Who it is suited for (Indian guideline)

• BMI 35 or more (South Asian cut-off is lower than Western).
• BMI 30 or more with serious obesity-related conditions — diabetes, sleep apnoea, fatty liver, hypertension, joint problems.
• Previous sincere efforts at lifestyle change have not brought enough improvement.
• No major psychiatric or eating disorder that would make surgery risky.
• Ready to commit to lifelong follow-up, vitamin supplements, and a changed way of eating.

Main procedures

• Sleeve gastrectomy — most of the stomach is removed, leaving a sleeve. Commonest in India; simpler than bypass; no nutrients are rerouted.
• Roux-en-Y gastric bypass — stomach is divided and the small intestine rerouted; excellent for diabetes reversal.
• Mini-gastric bypass (one-anastomosis bypass).
• Intragastric balloon — non-surgical; temporary (6-12 months); lower weight loss but less invasive.

Realistic expectations

• Most patients lose 50-70% of their excess weight over 1-2 years.
• Diabetes and other conditions often improve or reverse — especially when surgery is done earlier in the disease.
• It is not cosmetic. It is a serious operation for serious disease.
• Lifelong small-portion eating, protein focus, and multivitamin/mineral supplements are needed.
• Weight regain can happen if old habits return.

Risks

• Surgical complications — bleeding, leaks, infections (low at experienced centres).
• Nutrient deficiencies — iron, B12, calcium, vitamin D.
• Gallstones with rapid weight loss.
• Occasional need for revision surgery.

Bariatric surgery is available at many centres in Indian cities; costs and experience vary. Choose a team that does a high volume, offers proper pre-assessment (including mental-health and nutrition), and delivers lifelong follow-up — the follow-up matters as much as the surgery.