Gastric Sleeve and Bariatric Surgery in Türkiye: What to Expect

01The Main Bariatric Options

• Sleeve gastrectomy (gastric sleeve) — a large part of the stomach is removed, leaving a narrow tube-shaped stomach. It is one of the most commonly performed bariatric operations worldwide.
• Roux-en-Y gastric bypass — a small stomach pouch is created and connected directly to the small intestine, reducing both food intake and absorption.
• One-anastomosis (mini) gastric bypass — a variation of the bypass with a single connection.
• Intragastric balloon — a non-surgical option in which a balloon is placed in the stomach, usually for a limited period, to support weight loss.

Each option has different benefits, risks and long-term considerations, for example regarding reflux or vitamin absorption. The most suitable choice is decided with your surgeon after a full assessment.

02Who May Be Eligible?

International guidelines published in 2022 by the American Society for Metabolic and Bariatric Surgery (ASMBS) and the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) generally recommend bariatric surgery for adults with a body mass index (BMI) of 35 or more, and suggest it may be considered from a BMI of 30 for people with metabolic disease such as type 2 diabetes. Lower thresholds may apply for people of Asian descent.

BMI is only one part of the decision. The medical team also considers your overall health, previous attempts at weight loss, eating habits, mental wellbeing and readiness for long-term lifestyle change.

03Before Surgery: Tests and Preparation

Before surgery, you can expect a detailed assessment, which may include:

• Blood tests and an evaluation of existing conditions such as diabetes, sleep apnoea or high blood pressure
• Cardiology and anaesthesia checks
• An endoscopy or imaging of the stomach, where recommended
• Consultations with a dietitian and, often, a psychologist

You may be asked to follow a special pre-operative diet for a period before surgery. Sharing your medical history and current medications early helps the team plan safely.

04The Hospital Stay and Time in Türkiye

Bariatric operations are usually performed laparoscopically (keyhole surgery). Patients typically stay in hospital for a few days and are asked to remain in Türkiye for around a week or more afterwards for check-ups before flying home. Your surgeon will confirm the exact timeline.

Travelling with a companion is strongly recommended for bariatric surgery. Plan a flexible return flight in case your surgeon advises a longer stay.

05The Post-Operative Diet

After surgery, food is reintroduced gradually over several weeks to allow the stomach to heal. A typical progression is:

1. 1Clear liquids
2. 2Full liquids and protein drinks
3. 3Puréed foods
4. 4Soft foods
5. 5A balanced, regular diet in small portions

Eating slowly, chewing well, prioritising protein and drinking between rather than with meals are common recommendations. Your dietitian will give you a personal plan.

06Life After Bariatric Surgery

Surgery is a tool, not a cure on its own. Long-term success depends on regular follow-up, lifelong vitamin and mineral supplementation where prescribed, physical activity and support for new eating habits. Blood tests are usually recommended at regular intervals to check nutritional levels.

Before travelling, agree on how follow-up will work when you return home, and make sure your local doctor is informed. Our recovery and aftercare tips explain how to prepare for the journey home.

To explore your options, visit our bariatric and weight loss surgery section or share your request with our team.