Roux-en-Y gastric bypass
Two joins, with strong evidence for reflux relief and diabetes improvement. Lifelong supplements are essential, and dumping is a recognised risk.
- Joins
- Two
- Often preferred with
- Reflux or long-standing diabetes
A Roux-en-Y gastric bypass creates a small stomach pouch joined lower down the small intestine, so you eat less and absorb fewer calories. It suits adults with a BMI of 40+, or 35+ with diabetes or reflux. Plan about eight days in Istanbul.
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The surgeon creates an egg-sized stomach pouch and joins it to a loop of small intestine, the Roux limb. Food skips most of the stomach, gut hormones change and fewer calories are absorbed. Fewer vitamins are absorbed too, so lifelong supplements are part of the deal.

| Procedure time | Typically 2–3 hours |
|---|---|
| Anaesthesia | General anaesthesia |
| Hospital stay | 3–4 nights |
| Recommended stay in Istanbul | About 8 days (longer if your surgeon advises) |
| Back to desk work | Around 3 weeks |
| Exercise | Walking from day one; gym and lifting after about 4–6 weeks |
| Diet stages | Liquids → purée → soft → regular over about 6–8 weeks |
| Weight loss | Fastest in the first 6 months; lowest weight usually at 12–18 months |
| Results last | Long term with lifelong supplements, follow-up and healthy habits |
| Stitches | Small keyhole incisions, usually dissolvable stitches |
People who cannot commit to lifelong supplements may be safer with a gastric sleeve. Check your figure with our free BMI calculator and requirements checklist.
All three are keyhole operations with lifelong follow-up. Your tests, reflux history and health guide which one your surgeon recommends.
Two joins, with strong evidence for reflux relief and diabetes improvement. Lifelong supplements are essential, and dumping is a recognised risk.
A single join and often a shorter operation, with similar weight loss in trials. Bile reflux and nutritional deficiencies need close attention. Read about the mini bypass.
No rerouting and simpler nutrition, but a sleeve can worsen reflux. Read about the gastric sleeve.
Our guide to the four types of bariatric surgery compares them in more depth.
Most patients follow a low-calorie or liquid diet for about two weeks to shrink the liver. Stop smoking at least six weeks beforehand, as it greatly raises the risk of ulcers at the new join. In Istanbul, blood tests, ECG, imaging and an anaesthesia review come first; if a result needs attention, surgery waits.
General anaesthesia, leg compression and blood-thinning medication.
Five or six small incisions for camera and instruments.
A small pouch is stapled off at the top of the stomach.
The small intestine is divided and one end joined to the pouch.
The bypassed limb is joined further down to complete the Y.
Internal gaps closed and joins leak-tested before the wounds close.
Day 1
A VIP transfer meets you at the airport. Your patient coordinator and interpreter settle you into the hotel and explain the schedule.
Days 2–5
Tests and consultations, then surgery once results are cleared. You walk within hours and receive pain relief, anti-sickness medication and blood-thinning injections.
Days 5–7
Rest, frequent short walks and the liquid diet. Your coordinator checks on you daily, and the 24/7 support line is always available.
Day 7 or 8
Wound check, symptom review, diet sheet, supplement plan and discharge medication, then your airport transfer. Wear compression stockings on the flight.
Share your height, weight, medical history and any recent tests. Our medical team explains whether a Roux-en-Y bypass, a mini bypass or a sleeve fits you. Free, no obligation.
Your diet moves through four textures over about six to eight weeks. Most people return to desk work around week three.
After a bypass, supplements are not optional. You take a bariatric multivitamin with iron, calcium citrate with vitamin D and vitamin B12 every day for life.
A Vivid Clinic dietitian follows you remotely by video or messaging. Blood tests are repeated at around 3, 6 and 12 months, then yearly.

We do not publish prices, because a safe quote depends on your health and needs. A price is given only after our medical team reviews your details, and the consultation is free. For general context, see our bariatric surgery cost guide.
Typically covers:
Your price depends on
A gastric bypass is major surgery. Sudden severe abdominal pain, even months or years later, needs urgent assessment.

The NHS guide to weight loss surgery is a helpful independent read.
Plan on about eight days for a gastric bypass in Istanbul. You arrive, complete tests and meet the surgeon, have surgery, stay three to four nights in hospital and then spend a few days in your hotel while the team checks that you are drinking enough, walking well and have no signs of a leak or clot. Your surgeon confirms your fit-to-fly date, and some patients are advised to stay longer.
Often, yes. A Roux-en-Y gastric bypass tends to relieve acid reflux rather than worsen it, and it has strong long-term evidence for improving type 2 diabetes. For these reasons, surgeons frequently recommend it over a sleeve for people with significant reflux, a hiatus hernia or long-standing diabetes. The final choice depends on your tests, medical history and preferences, discussed with the surgeon.
After a gastric bypass in Istanbul you will need a bariatric multivitamin with iron every day, calcium citrate with vitamin D, and vitamin B12, usually as injections or a high-dose form. Some people also need extra iron or folate. These are lifelong, because the bypass reduces absorption. Blood tests at 3, 6 and 12 months and then yearly show whether your doses need adjusting.
Dumping happens when sugary or very fatty food passes quickly into the small intestine, causing sweating, a racing heart, cramps, diarrhoea or dizziness soon after eating; a later form causes low blood sugar one to three hours afterwards. You can usually avoid it by eating small protein-first meals, limiting sugar, and drinking fluids 30 minutes before or after meals rather than with them.
Converting a sleeve to a Roux-en-Y gastric bypass is an established revision operation, most often done for severe reflux or significant weight regain. It is more complex than a first operation, so it needs your previous operation notes, an endoscopy and often a contrast study. Our medical team reviews these before advising whether a revision gastric bypass in Istanbul is appropriate for you.
You walk within hours of surgery and take frequent short walks during your stay. Most people return to desk work around week three, during the purée stage. Gym work and lifting usually return after about four to six weeks, once your surgeon agrees. Tiredness is normal in the first weeks, so build up gradually and keep sipping fluids between meals rather than with them.
A Roux-en-Y gastric bypass uses two joins and has strong evidence for relieving reflux and improving diabetes. A mini gastric bypass uses a single join and is often a shorter operation, with similar weight loss in trials. With the mini bypass, bile reflux and nutritional deficiencies need close attention. Your endoscopy, reflux history and health guide the surgeon's recommendation.
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