Bariatric surgery

Bariatric surgery held by one team, from first read to the years after

Bariatric surgery — a gastric sleeve, a gastric bypass, a revision — is the most effective tool medicine has for severe obesity and the conditions that travel with it. But the operation itself is one day. What decides whether the result holds is the team around it: who reads your case, who performs it, and who stays with you through the years that follow. At Bahat Global, our Metabolic Institute in Istanbul is built so that all of it is owned by one senior team, not split between a theatre and a clinic that never speak.

Matching the operation to you

There is no single best weight-loss surgery. The right procedure depends on your weight, your metabolic picture, any weight-related conditions and your own history.

Sleeve gastrectomy

A gastric sleeve removes part of the stomach to reduce both its capacity and the hunger signals it sends. It is a strong, widely used first operation for many patients.

Gastric bypass

A gastric bypass reroutes the digestive path, changing both intake and absorption. It is often considered where reflux or type-2 diabetes are part of the picture, and it is weighed honestly against the sleeve for your situation.

Revision surgery

Where an earlier procedure has not held — inadequate weight loss, weight regain, or a complication — revision surgery is possible, but only after a full workup. A revision is more complex than a first operation, and here it is planned by the board, not rushed.

Which of these fits you is decided by a senior bariatric surgeon together with the metabolic board, after they have read your whole case — not chosen before you are seen.

Surgery and the metabolic programme, written into one plan

An operation on its own is not obesity treatment. Lasting results come when the surgery sits inside a metabolic programme — nutrition, endocrinology, psychology and, where indicated, medication — that starts before the date is set and continues long after.

• Before surgery: a full metabolic work-up and, where needed, optimisation, so you go into the operation as well prepared as possible.
• Around surgery: dietitian and psychology support built into the same plan, not referred out.
• After surgery: structured follow-up measured in years, catching nutritional deficiency and weight regain early, while they are still easy to correct.

This is the difference between a procedure and a pathway. Your anatomy absorbs nutrients differently after surgery for the rest of your life; iron, B12, vitamin D, calcium and protein need watching long after you feel well. Follow-up is the part most pathways quietly drop — and the part we treat as central.

Why Bahat Global, Istanbul

For patients weighing where to have bariatric surgery, the honest question is less about a country and more about how the care is organised. Bahat Global is built around one principle: one team owns your case from the first read to the years after.

• A 72-hour multidisciplinary board reviews your case across surgery, endocrinology and nutrition together — decisions are made by a team, not in isolation.
• A senior consultant first-reads your case within 24 hours, and one senior consultant owns it throughout.
• Surgery is performed on the full tertiary hospital campus of BHT Clinic Istanbul, JCI Accredited and TEMOS Certified.
• One medically-trained clinical case-manager coordinates the whole journey — from work-up to surgery to years of follow-up.
• Rehabilitation is integrated from day one, so movement is part of the plan, not an afterthought.
• The Bahat group was established in 1994 — three decades of clinical experience — with eight languages spoken at intake.

This is what premium care means here: clinical infrastructure and continuity, not a hotel brochure. The everyday goal is functional — climbing a flight of stairs without stopping, sleeping through the night, travelling without planning around your health.

Submit your case for the 72-hour board

If you are considering bariatric surgery — a first operation, or a revision after surgery elsewhere — you can submit your case for review by our multidisciplinary board. A senior surgeon and consultant will read it, and your clinical case-manager will explain the realistic next steps clearly, in your language.

Tell us where you are in your journey, and let our team plan the whole arc with you — the operation, and the years that keep the result.