
Clinical Lead
Meva Clinic Bariatric Care Team
Gastric Bypass in Turkey (Roux-en-Y)
- from 3,500 €
- ~4 nights in hospital
- no deposit
- English-speaking coordinator
A bariatric and metabolic surgery option for eligible patients with severe obesity, including some patients with type 2 diabetes, after a multidisciplinary medical assessment.
Meva Clinic Bariatric Care Team
Patient Care Information
Patient Care Information
"Our clinical approach prioritizes patient safety, individualized treatment planning, realistic expectations, and long-term follow-up throughout the international care journey."
About This Procedure
What is gastric bypass and how does it work?
A bariatric and metabolic surgery option for eligible patients with severe obesity, including some patients with type 2 diabetes, after a multidisciplinary medical assessment.
What is gastric bypass? Roux-en-Y gastric bypass is a bariatric and metabolic procedure that creates a small stomach pouch and reroutes part of the small intestine. This changes the path food takes and has both restrictive and metabolic effects. The procedure may be considered as part of a bariatric assessment, including when certain metabolic conditions or gastro-oesophageal reflux influence the choice of operation. Results and weight change differ from patient to patient, and no specific outcome can be promised.
Gastric bypass or gastric sleeve? Both are recognised bariatric procedures, but they work differently. To compare the options, patients can also read about the gastric sleeve (stomach reduction). Gastro-oesophageal reflux disease (GERD) is an important factor when choosing a bariatric procedure. In some patients with clinically significant reflux, gastric bypass may be considered as part of the bariatric plan. The decision is made individually after gastroenterological, surgical and multidisciplinary assessment.
Metabolic context and type 2 diabetes. Roux-en-Y gastric bypass has metabolic effects and, in clinical studies, is associated with improved blood-sugar control and, in some patients, remission of type 2 diabetes. The metabolic response varies with individual characteristics, how long the disease has been present, pancreatic function and adherence to the treatment and nutrition plan. Diabetes remission cannot be promised, and long-term metabolic monitoring remains necessary. Possible risks are assessed openly (PMID: 36280539).
Your clinical pathway with Meva Clinic. The coordinated gastric bypass pathway includes a multidisciplinary pre-operative assessment and, according to the confirmed individual plan, coordination of the hospital stay at the selected partner hospital, transfers, accommodation and support in your language. The operation and in-hospital medical care are provided by the responsible medical team. Nutrition and supplement recommendations are set individually. The included services and the cost estimate are set out in the written plan and reconfirmed before you travel. See also the bariatric and metabolic surgery options available for assessment.
Price. Gastric bypass has an estimated cost starting from €3,500. The final cost is confirmed individually, in writing, after a complete medical evaluation.
How much does a gastric bypass cost in Turkey compared with the UK?
At Meva Clinic, a Roux-en-Y gastric bypass costs from €3,500, with pre-operative tests, about 4 nights in hospital, transfers, an English-speaking coordinator and complication cover included. There is no deposit: you pay at the hospital, after admission and after you have spoken with the surgeon.
| Meva Clinic, Istanbul | UK private hospital | |
|---|---|---|
| Starting price | €3,500 | typically about £9,500–£15,000* |
| Pre-operative tests | included | often extra* |
| Nights in hospital | about 4 | typically 1–3* |
| Transfers and coordinator | included | n/a |
| Complication cover | 6 months, included | varies |
| Flight | extra | n/a |
*Typical published UK private prices, checked October 2026 (e.g. Ramsay Health Care UK); they vary by hospital.
On the NHS, weight-loss surgery is free, but waiting times are often long. A gastric bypass is a more complex operation than a gastric sleeve, so the surgeon's experience and the aftercare you receive matter more than the difference in price.
Common worries about gastric bypass, and what we do differently
- “They shortened my intestine too much.” Doctors describe patients with chronic diarrhoea and deficiencies after overly aggressive bypass surgery. At Meva Clinic, the surgeon chooses the type of operation and the length of the bowel limbs based on your BMI, diabetes and reflux, in line with guidelines, and explains the plan to you before the operation.
- “I had a bypass I didn't need.” The free assessment before you travel may recommend a gastric sleeve, a balloon or no surgery at all if a bypass is not necessary.
- “They operated on me straight after I landed.” You arrive in the evening and rest overnight in hospital; the tests and the operation take place the next day.
- “Nobody told me about vitamins.” After a bypass you need vitamins and blood tests for life. You receive your vitamins at discharge, a written plan and 1 year of remote medical follow-up.
- “I had a complication at home and paid again.” The package includes complication cover of up to €5,000 for 6 months after surgery, including up to €1,500 for care in your home country, according to the policy terms.
Full guide: Is weight-loss surgery in Turkey safe? Risks, complications and warning signs.
How much weight will you lose after a gastric bypass?
The two large randomised clinical trials that compared gastric bypass with the gastric sleeve over 5 years show:
- SM-BOSS (Switzerland, JAMA 2018): 68% of excess BMI lost after bypass, compared with 61% after gastric sleeve.
- SLEEVEPASS (Finland, JAMA 2018): 57% of excess weight lost after bypass, compared with 49% after gastric sleeve.
Example: a person who is 1.70 m tall and weighs 130 kg carries about 58 kg of excess weight relative to a BMI of 25. Losing 57–68% of that excess means about 33–39 kg kept off in the long term. A bypass is preferred especially when there is significant reflux or type 2 diabetes, and the final choice is made by the surgeon after assessment.
Work out your starting point with our BMI calculator or compare with the gastric sleeve.
Medically reviewed by
Op. Dr. Cuma A.
General Surgeon · Obesity & Metabolic Surgery
Graduate of Istanbul University–Cerrahpaşa Faculty of Medicine and specialist in general surgery. For more than 10 years his practice has focused on obesity and metabolic surgery — sleeve gastrectomy, gastric bypass, gastric botox and gastric balloon — with more than 10,000 bariatric procedures performed. Holds the Turkish Ministry of Health–approved obesity surgery certification.
Who is a candidate for a gastric bypass?
Your BMI is above 35 kg/m² and you want to find out whether bariatric surgery is right for your situation.
Your BMI is between 30 and 34.9 kg/m², you have a metabolic condition, and non-surgical methods have not given you lasting results.
You have type 2 diabetes, gastro-oesophageal reflux or other obesity-related conditions that call for a specialist medical assessment.
You understand that eligibility and the choice of procedure are decided individually, after assessment by the medical team.
What the gastric bypass package in Turkey includes
Free assessment by the surgeon before you travel (WhatsApp video call or email)
Pre-operative tests and investigations at the hospital
Laparoscopic surgery under general anaesthesia, performed by Op. Dr. Cuma A.
About 4 nights in hospital, with round-the-clock nursing and 3 meals a day
VIP transfer from the airport (IST or SAW) to the hospital and back
English-speaking patient coordinator with you at the hospital
One companion can stay free of charge in your hospital room, meals included
Discharge medication, vitamins, compression stockings and a post-operative check-up
Complication cover for 6 months after surgery, according to the policy terms
Remote medical follow-up for 1 year (WhatsApp, Zoom or email)
Flights are not included. Optional: partner hotel with Bosphorus views, on request (charged separately)
How gastric bypass surgery works, step by step
Creation of a small gastric pouch and intestinal rerouting.
Pre-operative assessment
Depending on your history and risk profile, tests may include blood work, cardiology checks, imaging, a digestive assessment and specialist consultations. The surgical team confirms suitability before surgery is scheduled.
General anaesthesia and monitoring
The operation is performed under general anaesthesia, with monitoring led by the anaesthesia and surgical team at the partner hospital named in your confirmed care plan.
Creating the small stomach pouch
Through small laparoscopic (keyhole) incisions, the surgeon divides the stomach to create a small pouch, sized to your anatomy and individual plan.
Rerouting the small intestine (Roux-en-Y)
A section of the small intestine is connected to the new pouch, so food bypasses most of the stomach and the first part of the small intestine.
Intra-operative safety checks
The team checks for bleeding and tests the new connections for leaks, following the protocols that apply to your case.
Monitoring on the ward
After surgery you are monitored in hospital; walking, hydration and the first clear liquids are introduced step by step, according to how you recover.
Gastric bypass recovery, day by day
Phase 1: Hospital Stay (4 nights)
You stay at the partner hospital for monitoring, assisted walking and clear liquids. Discharge happens only once the medical team confirms you are ready; you fly home once the surgeon clears you.
Phase 2: After Discharge (optional hotel on request, separate cost)
Short walks, sip-by-sip hydration, full liquids as prescribed and your medication. A check-up before the flight home confirms you are fit to travel.
Phase 3: Weeks 2–8 at Home
Your diet moves step by step from liquids to purée, then soft foods and finally regular textures, usually over about 4–8 weeks. Desk work often resumes after around 14 days, if your recovery allows.
Phase 4: First Year and Beyond
Lifelong vitamin and mineral supplements and regular blood tests are part of life after a bypass. Online nutrition and follow-up support continues for 12 months, according to your confirmed care plan.
The Meva Advantage
A coordinated pathway for patients travelling from abroad: individual assessment, planning with the partner hospital suited to the case, transfers and accommodation according to the confirmed plan, and remote post-operative guidance.
Gastric bypass risks and how they are managed
Hospital-based procedures are coordinated through accredited partner hospitals, including JCI-accredited institutions where clinically appropriate. Below are the clinical guidelines, safety protocols, and medical reference documentation for this procedure.
Indicated / Suitable For
- Eligibility is assessed individually using Body Mass Index (BMI), obesity-related conditions, metabolic health, previous treatment history, and a multidisciplinary review.
- Current international guidelines generally support metabolic and bariatric surgery for appropriately selected patients with a BMI above 35, and consideration for lower BMI ranges when metabolic disease is present.
- Presence of severe acid reflux (GERD) or metabolic syndrome may influence whether a gastric bypass or a sleeve gastrectomy is considered more appropriate after specialist assessment.
- Candidates who have not achieved sustained weight reduction through structured lifestyle, diet, and non-surgical management options.
- International patients seeking hospital-based surgical planning, pre-operative clearances, and long-term follow-up planning.
Contraindications / Not Suitable
- Untreated severe psychiatric conditions, active substance abuse, or eating disorders that limit compliance with mandatory post-operative guidelines.
- Severe portal hypertension with gastric varices, active uncorrected bleeding disorders, or advanced cardiopulmonary disease precluding general anesthesia.
- Active gastrointestinal ulcers, severe inflammatory bowel disease (Crohn's disease involving the small intestine), or structural anomalies of the digestive tract.
- Pregnancy, or plans to become pregnant within 12 to 18 months following the surgical procedure due to nutritional and rapid weight loss risks.
- Inability or unwillingness to commit to lifelong daily vitamin/mineral supplementation and structured follow-up planning.
Pre-Operative Evaluation & Diagnostic Checks
Bariatric Consultations: Multi-disciplinary evaluation including detailed medical history and metabolic status analysis by the bariatric team.
Pre-Operative Laboratory Panels: Extensive blood work including complete blood count, metabolic chemistry, liver/kidney functions, thyroid profiles, HbA1c, and baseline nutrient levels.
Cardiovascular & Pulmonary Clearance: Electrocardiogram (ECG), chest X-ray, and pulmonary function tests to evaluate fitness for general anesthesia.
Gastrointestinal Assessment: Upper endoscopy (EGD) where indicated to screen for H. pylori infection, hiatal hernias, and assess the stomach lining before surgery.
Nutritional Counseling: Guidance to prepare patients for the progressive dietary phases post-surgery.
Potential Risks & Complications
In compliance with transparent clinical reporting, Meva Clinic ensures patients are fully informed of the physiological risks associated with surgical procedures through accredited partner-hospital safety protocols where clinically appropriate.
Gastric or intestinal fluid leakage at the surgical connections; mitigated by intraoperative leak testing and managed surgically or endoscopically.
Rapid transit of food (especially sugar/carbohydrates) into the small intestine, causing nausea, dizziness, sweating, or abdominal cramps.
Ulceration at the gastrojejunal connection; managed with proton pump inhibitors (PPIs) and avoidance of smoking and NSAIDs.
Reduced absorption of iron, calcium, folate, and vitamins (B12, D); managed through structured daily supplementation.
Internal hernias or adhesions causing small bowel obstruction, potentially requiring surgical revision.
Deep vein thrombosis (DVT) or pulmonary embolism; mitigated by early mobilization, compression devices, and anticoagulant therapy.
Realistic Expectations & Outcomes
Published outcomes vary by patient, procedure type, follow-up adherence, and metabolic profile. Some studies associate Roux-en-Y gastric bypass with substantial weight-loss and potential improvement in obesity-related metabolic conditions, but no specific weight-loss amount, diabetes outcome, or clinical result can be promised.
Revision & Follow-Up Policy
In cases of long-term weight regain, severe nutritional complications, or anatomical issues (such as anastomotic stenosis or persistent ulcers), a comprehensive diagnostic workup including imaging and endoscopy is conducted. Revisional options may be evaluated following a multi-disciplinary review by the bariatric board. For 12 months after your treatment you can also send photos to the medical team whenever you wish and receive their feedback, and your questions are answered remotely.
Authoritative Medical References & Studies
- [1]American Society for Metabolic and Bariatric Surgery (ASMBS) and International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO): Indications for Metabolic and Bariatric Surgery (2022). (PMID: 36280539)View Study
- [2]Peterli R, et al. Effect of Laparoscopic Sleeve Gastrectomy vs Laparoscopic Roux-en-Y Gastric Bypass on Weight Loss in Patients With Morbid Obesity: The SM-BOSS Randomized Clinical Trial. JAMA. 2018;319(3):255-265.View Study
- [3]Salminen P, et al. Effect of Laparoscopic Sleeve Gastrectomy vs Laparoscopic Roux-en-Y Gastric Bypass on Weight Loss at 5 Years Among Patients With Morbid Obesity: The SLEEVEPASS Randomized Clinical Trial. JAMA. 2018;319(3):241-254.View Study
Medical Disclaimer: The clinical information provided on this page is for educational and general information purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Final suitability and treatment pathways are determined exclusively after in-person consultations, medical assessments, physical tests, and diagnostic checks in Istanbul.
Gastric bypass in Turkey: frequently asked questions
Related Treatments
Gastric Sleeve in Turkey (Sleeve Gastrectomy)
Gastric sleeve, also known as sleeve gastrectomy or stomach reduction surgery, is a laparoscopic bariatric procedure in which a significant part of the stomach is removed. Whether it is indicated, and the final plan, are decided by the specialist surgeon after a clinical assessment.
Gastric Balloon (Allurion)
Non-surgical weight-loss support: a swallowable balloon capsule that creates a feeling of fullness for about 16 weeks, then passes naturally. No anaesthesia or endoscopy.
Gastric Botox Injection
A non-surgical endoscopic procedure that temporarily slows stomach emptying and supports appetite control in eligible patients, as part of a nutrition plan.
Bariatric Revision Surgery
A second, carefully planned operation for patients whose gastric sleeve, gastric band or gastric bypass has led to reflux, weight regain, insufficient weight loss or a mechanical problem, decided after a review of the first surgery and current tests.
Medical Insights & Blog
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Type 2 Diabetes and Metabolic Surgery: When Bariatric Surgery Can Help
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Procedure Details
Hospital Stay
4 Nights
Hotel Package
Optional, on request
Return to Work
14 Days
Anaesthesia
General
