Glossary term · Treatment
Bariatric surgery (also: Weight-loss surgery, Metabolic and bariatric surgery): Bariatric surgery is a group of operations that change the stomach or intestines to help people with obesity lose weight and improve related conditions.
Bariatric surgery, also called metabolic and bariatric surgery, is an operation that changes the digestive system to help people with obesity lose weight. The US National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) says it is for people who have not lost enough weight by other means. It needs lifelong changes to eating and vitamin supplements.
What are the main types?
- Sleeve gastrectomy: most of the stomach is removed, leaving a banana-shaped tube. It is permanent.
- Roux-en-Y gastric bypass: a small stomach pouch is made and the small intestine is rerouted.
- Adjustable gastric band: an inflatable band narrows the top of the stomach. NIDDK says it is less common now.
- Biliopancreatic diversion with duodenal switch: NIDDK says it carries the highest risk of complications and deficiencies.
Who may be considered?
NIDDK lists adults with a BMI of 40 or higher, or 35 or higher with a serious obesity-related health problem. MedlinePlus notes a lower threshold of 27.5 for people of Asian descent in its gastric bypass guidance. The bariatric team decides who is suitable.
What happens before and after surgery?
NIDDK says patients usually see an internist, dietitian, mental health professional and surgeon first. Stopping smoking at least six weeks ahead and bringing blood glucose closer to normal may lower risk. After surgery, diet moves from liquids to soft foods to solids. NIDDK says lifelong vitamin and mineral supplements are needed.
Why does follow-up matter so much for travellers?
Bariatric surgery is a lifelong commitment, not a single operation. Before travelling, arrange a dietitian and doctor at home who will monitor blood tests and supplements. Ask the Indian team for a written diet plan and a clear follow-up schedule.
Questions people ask
Which bariatric operation is right for me?
NIDDK says the right option depends on several factors that should be discussed with your doctor. These include your health, eating patterns and conditions such as reflux or diabetes. The bariatric surgeon decides with you after assessment.
Can bariatric surgery be reversed?
It depends on the type. NIDDK says a sleeve gastrectomy is permanent, a gastric bypass is difficult to reverse and a band can be removed. Ask your surgeon before you decide.
Sources
General information, not medical or legal advice. Rules change: confirm with the official source. Your treating specialist decides on suitability, treatment and length of stay. How we write and check.