Gastric Bypass Turkey — Roux-en-Y Surgery Istanbul from £2,695
Gastric bypass at MedProper Istanbul from £2,695 all-inclusive. Roux-en-Y and mini bypass. JCI hospital, IFSO surgeons, 12-month aftercare.
Is it safe?
Your hospital holds the same JCI accreditation as Cleveland Clinic and Johns Hopkins. Verified by TEMOS for international patient safety.
Will the price change?
Your price is locked before you book. Surgery, hospital, hotel, transfers, aftercare — one number, no extras.
What if something goes wrong?
Mandatory insurance required by Turkish law. If a revision is needed — flights, hospital, surgeon — covered. You never pay twice.
Who's my surgeon?
Confirmed before you pay. Full credentials, specialisation, and patient results shared upfront. No last-minute switch.
What happens after I fly home?
24/7 WhatsApp with your coordinator. Scheduled video check-ups with your surgeon. 12 months, not 12 days.
What Is Gastric Bypass Surgery?
Gastric bypass surgery, formally known as Roux-en-Y gastric bypass (RYGB), is the gold standard of metabolic surgery and one of the most thoroughly studied surgical procedures in medicine. During the operation, the surgeon creates a small stomach pouch of approximately 30 ml — roughly the size of an egg — and reroutes the small intestine to connect directly to this pouch, bypassing the majority of the stomach and the first section of the small intestine (the duodenum).
This dual mechanism — restriction (smaller stomach) plus controlled malabsorption (bypassed intestine) — produces greater average weight loss than gastric sleeve and the highest rates of Type 2 diabetes remission among all bariatric procedures. First performed in 1967 and performed laparoscopically since the mid-1990s, Roux-en-Y gastric bypass has the longest track record of any modern bariatric procedure.
At MedProper Istanbul, gastric bypass is performed laparoscopically through 5 small incisions by IFSO-member bariatric surgeons in a JCI-accredited hospital, with all-inclusive packages starting from £2,695 / €3,150.
Gastric Bypass Turkey Cost 2026
Procedure
MedProper (GBP)
MedProper (EUR)
UK Private
USA Private
You Save
Gastric Bypass (Roux-en-Y)
from £2,695
from €3,150
£8,000-£12,000
$20,000-$35,000
Frequently Asked Questions (15)
How much does gastric bypass cost in Turkey?
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.
Is gastric bypass safer than gastric sleeve?
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.
What is the difference between Roux-en-Y and mini gastric bypass?
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Get a personalised treatment plan with transparent pricing. No hidden fees, no obligations.
up to 90%
Mini Gastric Bypass (OAGB)
from £2,695
from €3,150
£8,000-£12,000
$20,000-$35,000
up to 90%
Full Cost Breakdown: MedProper vs UK vs USA
Cost Component
MedProper Istanbul
UK Private Clinic
USA Private Clinic
Surgeon fee
Included
£4,000-£6,000
$10,000-$18,000
Operating facility + theatre
Included
£1,500-£2,500
$3,000-£5,000
Anaesthesia (general)
Included
£500-£1,000
$1,000-$2,000
Hospital stay (3-5 nights)
Included
£500-£1,000/night
$1,000-$2,000/night
Hotel (3-5 nights, 4-5 star)
Included
N/A
N/A
VIP airport transfers
Included
N/A
N/A
Pre-operative blood work + imaging
Included
£200-£400
$500-$1,000
Post-operative medications
Included
£50-£150
$100-$300
Vitamin supplements (3 months)
Included
£30-£60
$50-$100
Dietitian consultation
Included
£100-£250/visit
$200-$400/visit
Leak test (contrast swallow)
Included
Varies
Varies
12-month aftercare
Included
£100-£250/visit
$200-$400/visit
Total
from £2,695
£7,500-£13,000+
$16,000-$30,000+
What's Included in MedProper's All-Inclusive Gastric Bypass Package
Companion accommodation (same hotel room, no extra charge)
Mandatory complication insurance (Turkish Ministry of Health)
Types of Gastric Bypass
Roux-en-Y Gastric Bypass (RYGB)
The classic gastric bypass technique, performed since 1967. The surgeon creates two anastomoses (connections): one between the small stomach pouch and the Roux limb of the jejunum (~150 cm), and a second Y-connection where the biliopancreatic limb rejoins. This creates separate pathways for food and digestive enzymes, combining restriction with controlled malabsorption.
Duration: 90-150 minutes under general anaesthesia
Hospital stay: 3-5 nights
Expected weight loss: 65-75% of excess weight in 12-18 months
Type 2 diabetes remission: 80%+ (highest of any bariatric procedure)
GORD resolution: 90%+
Technical complexity: Higher than sleeve (two anastomoses vs none)
Mini Gastric Bypass / One-Anastomosis Gastric Bypass (OAGB)
A simplified version of Roux-en-Y with a single intestinal connection instead of two. Creates a longer, tubular stomach pouch connected to a loop of small intestine approximately 200 cm from the ligament of Treitz. Now representing approximately 30% of all bypass procedures globally and growing in popularity.
Duration: 60-90 minutes
Hospital stay: 3-4 nights
Expected weight loss: 65-75% of excess weight (comparable to Roux-en-Y)
Advantages: Shorter surgical time, simpler technique, potentially reversible
Growing adoption: endorsed by IFSO since 2018
Gastric Bypass vs Gastric Sleeve: Which Should You Choose?
This is the most common question patients ask. The answer depends on your BMI, health conditions, and specific goals:
MedProper recommendation: Gastric sleeve is optimal for most patients (BMI 35-45 without severe reflux) due to simpler surgery, faster recovery, and lower supplement requirements. Gastric bypass is specifically recommended when the patient has BMI over 45, poorly controlled Type 2 diabetes, chronic acid reflux, or a sweet-eating pattern (bypass creates dumping syndrome which discourages sugar consumption).
Who Should Choose Gastric Bypass Over Gastric Sleeve?
Gastric bypass is the recommended procedure when:
BMI over 45 — bypass produces greater weight loss at higher BMIs
Poorly controlled Type 2 diabetes — 80%+ remission rate versus 60% for sleeve. The 2022 IFSO position statement specifically recommends bypass for metabolic surgery in diabetic patients
Chronic gastroesophageal reflux disease (GORD) — bypass resolves reflux in over 90% of cases. Gastric sleeve may worsen existing reflux in 15-20% of patients
Sweet-eating pattern — bypass creates "dumping syndrome" (nausea, sweating, dizziness after sugar), which naturally discourages high-sugar food consumption
Previous gastric sleeve with weight regain — sleeve-to-bypass conversion is the most common revision pathway
Higher metabolic impact needed — bypass alters more hormonal and metabolic pathways than sleeve
The Gastric Bypass Procedure: Step by Step
General anaesthesia — you are fully asleep throughout
5 small laparoscopic incisions (5-12 mm each) in the abdomen
Stomach division — the surgeon staples across the upper stomach to create a small pouch (~30 ml)
Small intestine division — the jejunum is divided approximately 50-75 cm below the stomach
Roux limb connection — the lower (distal) end of the divided intestine is connected to the stomach pouch (alimentary limb, ~150 cm). Food now travels from the small pouch directly into the mid-jejunum
Y-connection — the upper (proximal) end carrying bile and pancreatic enzymes is reconnected to the Roux limb further downstream, creating the characteristic Y-shape
Leak test — performed intraoperatively to verify all connections are intact
Incisions closed — dissolvable sutures, no staple removal needed
Total duration: 90-150 minutes. The procedure is performed entirely laparoscopically — no large incisions.
Gastric Bypass Safety: Death Rate and Risks
What is the gastric bypass death rate?
The mortality rate for laparoscopic Roux-en-Y gastric bypass at experienced, high-volume centres is approximately 0.2-0.5% — slightly higher than gastric sleeve (0.08-0.19%) due to the greater surgical complexity (two anastomoses versus none). At JCI-accredited hospitals with standardised protocols, the rate is at the lower end of this range.
For perspective: the long-term mortality risk of untreated severe obesity far exceeds the surgical risk. Bariatric surgery reduces all-cause mortality by 50-70% over 10 years (Lancet, 2024).
Known Complications and Their Frequency
Complication
Frequency
MedProper Management
Anastomotic leak
<2%
Dual leak test protocol
Internal hernia
1-3% (long-term)
Mesenteric defect closure during surgery
Marginal ulcer
5-10%
Treatable with PPI medication
Dumping syndrome
10-15%
Dietary management (usually resolves)
Nutritional deficiency
Ongoing risk
Mandatory supplement protocol + monitoring
Bleeding
<1%
24-hour monitoring + Level 3 ICU on-site
DVT/PE
<1%
Prophylactic DVT protocol
MedProper Safety Protocols
JCI + TEMOS dual accreditation
Named surgeon guarantee (IFSO member)
Dual leak test (intraoperative + contrast swallow day 1-2)
Level 3 intensive care on-site
24-hour post-operative monitoring
Prophylactic DVT protocol (compression + heparin + early mobilisation)
Mandatory complication insurance (Turkish Ministry of Health)
Full liquids (protein shakes), rest, dietary guidance
Home: liquids
Weeks 1-2
Protein shakes, smooth soups, 60g protein/day target
Pureed foods
Weeks 3-4
Blended vegetables, hummus, scrambled egg
Soft foods
Weeks 5-6
Soft fish, cottage cheese, mashed vegetables
Normal diet
Week 7+
Small portions, protein first, chew thoroughly
Return to desk work
2-3 weeks
Light activity, no heavy lifting
Return to exercise
4-6 weeks
Walking from day 1, moderate exercise from week 4
Full recovery
6-8 weeks
All normal activities resumed
Long-Term Results: What to Expect After Gastric Bypass
Weight Loss
12-18 months: 65-75% of excess weight lost
5 years: 55-65% excess weight loss maintained
10 years: 50-60% maintained (some regain of 10-15% is normal)
Disease Resolution
Type 2 diabetes remission: 80%+ (often within days of surgery)
Hypertension resolution: 65-75%
Sleep apnoea resolution: 80-85%
GORD resolution: 90%+
Cardiovascular mortality reduction: 50-70%
Lifetime Supplement Requirements
After gastric bypass, you must take the following supplements for life:
Multivitamin — daily
Vitamin B12 — monthly injection or daily sublingual
Iron — daily (especially for menstruating women)
Calcium citrate — 1,200-1,500 mg/day (in divided doses)
Vitamin D — 3,000 IU/day
Folate — if planning pregnancy
MedProper provides 3 months of supplements and a detailed protocol for your GP. Blood work should be checked at 6 weeks, 3 months, 6 months, and annually thereafter.
Gastric Bypass vs Ozempic/Wegovy: Surgery or Medication?
Factor
GLP-1 Medications (Ozempic/Wegovy)
Gastric Bypass
Weight loss
15-20% of total body weight
30-35% of total body weight
Type 2 diabetes
Improvement
80%+ full remission
Duration
Must take indefinitely
One-time procedure
Monthly cost (UK)
£200-£300/month ongoing
One-time from £2,695
5-year cost (UK)
£12,000-£18,000
£2,695 (one-time)
Weight regain on stopping
60-70% within 12 months
10-15% at 5 years
GORD effect
Neutral
Resolves 90%+
Best for
BMI 27-35, medication-responsive
BMI 35+, lasting results, diabetes
Surgery is more cost-effective, produces greater weight loss, superior diabetes remission, and does not require lifelong medication. Some patients use GLP-1 agonists as a bridge to surgery or as post-surgical support for stubborn plateaus.
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.
How much weight will I lose after gastric bypass?
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.
Can gastric bypass cure Type 2 diabetes?
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.
What is the gastric bypass death rate?
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.
Will I have loose skin after gastric bypass?
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.
Can gastric bypass be reversed?
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.
What vitamins do I need after gastric bypass?
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.
How long do I stay in Turkey after gastric bypass?
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.
What is dumping syndrome after gastric bypass?
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.
Can I drink alcohol after gastric bypass?
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.
Is gastric bypass better than Ozempic?
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.
How do I book gastric bypass at MedProper?
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.
What if I need revision surgery after gastric bypass?
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.
