Gastric Bypass Turkey — Roux-en-Y Surgery Istanbul from £2,695 — Frequently Asked Questions

At MedProper Istanbul, gastric bypass (Roux-en-Y or mini bypass) starts from £2,695 / $3,435 / €3,150 all-inclusive. This covers the surgeon fee, 3-5 nights hospital, hotel, VIP transfers, tests, medications, vitamin supplements, dietitian consultation, leak test, and 12-month aftercare. No hidden charges.

Gastric sleeve has a slightly lower mortality rate (0.08-0.19%) compared to gastric bypass (0.2-0.5%) because bypass involves two intestinal connections while sleeve involves none. However, both are very safe procedures at experienced centres, and bypass is specifically recommended for certain conditions (diabetes, GORD) where its superior outcomes justify the marginally higher complexity.

Roux-en-Y creates two intestinal connections (anastomoses) forming a Y-shape. Mini bypass (OAGB) creates just one connection, making it simpler, faster (60-90 min vs 90-150 min), and potentially reversible. Weight loss outcomes are similar. Your MedProper surgeon will recommend the most appropriate technique based on your anatomy and health profile.

Most patients lose 65-75% of excess body weight within 12-18 months. For example, if you are 40 kg above your ideal weight, you can expect to lose 26-30 kg. Weight loss continues for up to 18 months, with the most rapid loss in the first 6 months. At 10 years, 50-60% of excess weight loss is maintained.

Gastric bypass produces Type 2 diabetes remission in over 80% of patients — the highest rate of any bariatric procedure. Remission often occurs within days of surgery, before significant weight loss, due to hormonal changes. The 2022 IFSO position statement recommends bypass as metabolic surgery for patients with BMI 30+ and poorly controlled diabetes.

The mortality rate for laparoscopic Roux-en-Y gastric bypass at experienced, JCI-accredited centres is approximately 0.2-0.5%. At MedProper's JCI-accredited facility with standardised protocols, dual leak testing, and Level 3 ICU, the risk is at the lower end of this range.

After losing 65-75% of excess weight, most patients have some degree of loose skin, particularly around the abdomen, arms, thighs, and breasts. Body contouring procedures such as tummy tuck, arm lift, and breast lift are typically performed 12-18 months after bypass once weight has stabilised.

Roux-en-Y gastric bypass is technically reversible but this is very rarely performed. Mini gastric bypass (OAGB) is more straightforwardly reversible due to its single connection. In practice, revision to a different configuration is more common than full reversal.

After gastric bypass, you must take for life: daily multivitamin, vitamin B12 (monthly injection or daily sublingual), iron (especially menstruating women), calcium citrate (1,200-1,500 mg/day), vitamin D (3,000 IU/day), and folate if planning pregnancy. MedProper provides 3 months of supplements and a detailed protocol for your GP.

Most patients stay 8-10 days: 3-5 nights in hospital followed by 3-5 nights in a partnered hotel. You have a final check-up with your surgeon before flying home. Flights from London to Istanbul are approximately 3.5 hours.

Dumping syndrome occurs when food, especially sugar, moves too quickly from the stomach pouch into the small intestine. Symptoms include nausea, sweating, dizziness, and diarrhoea 15-30 minutes after eating sugary foods. It affects 10-15% of bypass patients and is actually considered beneficial — it naturally discourages high-sugar eating. It is manageable with dietary changes.

Alcohol is absorbed much faster after gastric bypass because it enters the bloodstream more quickly through the bypassed digestive system. One drink may feel like two or three. Most surgeons recommend avoiding alcohol completely for at least 6 months and exercising extreme caution thereafter. Alcohol is also calorie-dense and can hinder weight loss.

Gastric bypass produces greater weight loss (30-35% vs 15-20% total body weight), superior Type 2 diabetes remission (80%+ vs improvement), and is a one-time procedure versus lifelong medication (£200-300/month). Over 5 years, Ozempic costs £12,000-18,000 versus £2,695 for bypass at MedProper. Surgery is recommended for patients with BMI 35+ seeking lasting results.

Contact MedProper via website, WhatsApp, or email with your height, weight, and medical history. You receive a personalised assessment within 48 hours confirming eligibility and an exact all-inclusive price. Pay the deposit, complete a 2-4 week pre-operative liquid diet, and travel to Istanbul for surgery. Typical wait: 2-4 weeks from consultation.

Revision after gastric bypass is uncommon but possible. Reasons include insufficient weight loss, weight regain, or nutritional complications. MedProper's bariatric team performs revision cases and will assess your suitability during a free consultation. Revision surgery starts from £2,520 / €2,950 all-inclusive.