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Gastric Sleeve vs. Gastric Bypass: Which Weight Loss Surgery Is Right for You?
Choosing between gastric sleeve and gastric bypass surgery is a major decision — and the right choice depends on your health history, weight loss goals, and long-term lifestyle commitment.
Both procedures are clinically proven to help patients achieve substantial weight loss and improve conditions such as type 2 diabetes, high blood pressure, and sleep apnea. But they differ in surgical approach, recovery, and long-term outcomes.
Let’s compare them in detail.
🩺 What Is Gastric Sleeve Surgery?
Also called sleeve gastrectomy, this procedure involves:
- Removing about 75–80% of the stomach
- Creating a small, banana-shaped stomach pouch
- Reducing appetite by lowering hunger hormone (ghrelin) production
- Limiting how much food can be eaten at one time
✅ Less invasive
✅ Lower risk of nutritional deficiencies
✅ Suitable for patients with moderate to severe obesity
💶 Average price in Turkey: €3,000 (all-inclusive)
🔁 What Is Gastric Bypass Surgery?
Also known as Roux-en-Y gastric bypass, this procedure involves:
- Creating a small stomach pouch at the top of the stomach
- Bypassing a portion of the small intestine
- Reducing both food intake and nutrient absorption
- Altering gut hormones to help with diabetes and satiety
✅ Higher long-term weight loss potential
✅ Often more effective for patients with severe type 2 diabetes or GERD
✅ Can lead to greater improvement in obesity-related diseases
⚠️ More complex surgery, with higher risk of malabsorption and dumping syndrome
💶 Average price in Turkey: €4,000 (all-inclusive)
📊 Comparison
Gastric Sleeve Surgery involves permanently removing a large portion of the stomach, leaving behind a narrow, sleeve-shaped stomach. It restricts the amount of food you can eat and significantly reduces hunger hormones such as ghrelin. The digestive system remains intact, meaning food follows its normal path and nutrient absorption is not altered. This results in a lower risk of nutritional deficiencies compared to gastric bypass. It’s a less invasive procedure, generally associated with fewer complications. However, gastric sleeve may worsen acid reflux in some patients. It’s often recommended for individuals with moderate to severe obesity who prefer a simpler surgical approach. In Turkey, the average all-inclusive price for gastric sleeve surgery is €3,000.
Gastric Bypass Surgery, on the other hand, is a more complex procedure. It involves creating a small pouch at the top of the stomach and connecting it directly to the small intestine, effectively bypassing a portion of the stomach and intestine. This limits food intake and also reduces calorie and nutrient absorption. It typically leads to more dramatic weight loss and is especially effective for patients with severe type 2 diabetes, metabolic syndrome, or chronic acid reflux. However, because part of the intestine is bypassed, there's a higher risk of nutritional deficiencies, dumping syndrome, and other gastrointestinal side effects. Gastric bypass requires more long-term vitamin and mineral supplementation. In Turkey, the average all-inclusive cost for gastric bypass surgery is €4,000.
🏥 Why Turkey?
At CosmetoCity, we help international patients undergo safe, successful bariatric procedures in Antalya and Istanbul, with:
- 🏥 JCI-accredited hospitals
- 👨⚕️ Experienced bariatric surgeons
- 🏨 Comfortable hotel stay & VIP transfers
- 💬 English-speaking patient coordinators
- 📞 Lifetime support after surgery
✅ Which Surgery Is Best for You?
Gastric Sleeve may be ideal if you:
- Want a simpler procedure
- Prefer to avoid intestinal rerouting
- Have moderate obesity without severe GERD or diabetes
Gastric Bypass may be better if you:
- Need maximum weight loss
- Have severe metabolic issues (like advanced diabetes)
- Suffer from chronic acid reflux
The best way to decide is through a comprehensive medical consultation with a bariatric specialist.
📞 Let Us Help You Choose the Right Path
Contact CosmetoCity today for a free consultation, and let our experienced medical team guide you in choosing the most suitable weight loss surgery for your body and your future.