Gastric Bypass

Gastric Bypass in Istanbul: The Most Effective Weight Loss Surgery

Roux-en-Y gastric bypass is the gold standard bariatric procedure for patients with severe obesity. It works by creating a small stomach pouch and rerouting the small intestine, combining restriction (you eat less) with malabsorption (your body absorbs fewer calories). Patients typically lose 60 to 80 percent of their excess weight within 12 to 18 months. At Estetica Istanbul, our bariatric team performs laparoscopic gastric bypass with outcomes that match the best centres in Europe.

How Gastric Bypass Works

Your surgeon divides the stomach into a small pouch (about 30 ml) and a larger remnant. The small intestine is then rerouted so that food bypasses most of the stomach and the first section of the small intestine. This means:

• You physically cannot eat large portions (restriction)
• Your body absorbs 20 to 30 percent fewer calories from what you do eat (malabsorption)
• Hormonal changes reduce hunger and increase the feeling of fullness
• Many patients experience reduced cravings for sugar and high-calorie foods

Gastric Bypass vs Gastric Sleeve

Both procedures are effective, but bypass is generally recommended for patients with higher BMI or metabolic conditions:

• Bypass: 60 to 80 percent excess weight loss. Reverses type 2 diabetes in up to 80 percent of patients. More complex procedure, slightly longer recovery.
• Sleeve: 50 to 70 percent excess weight loss. Simpler procedure, faster recovery. Does not include malabsorptive component.

Our bariatric surgeon will recommend the best option based on your BMI, medical history, and weight loss goals during your free consultation.

Who Is a Candidate?

• BMI of 40 or above (morbid obesity)
• BMI of 35 or above with obesity-related conditions such as type 2 diabetes, hypertension, or sleep apnoea
• Patients who have not achieved lasting results through diet and exercise alone
• Patients committed to lifelong nutritional supplementation and follow-up

The Procedure at Estetica Istanbul

We perform laparoscopic (keyhole) Roux-en-Y gastric bypass. The procedure takes 2 to 4 hours under general anaesthesia.

• 4 to 5 small incisions (each under 1 cm) in the abdomen
• Stomach divided to create a 30 ml pouch
• Small intestine divided and reconnected to the pouch (Roux limb)
• Remaining stomach left in place (sealed, not removed)
• All connections tested for leaks during surgery
• Hospital stay: 3 to 4 nights with round-the-clock nursing

Expected Weight Loss

• Months 1 to 3: Rapid loss, typically 10 to 20 kg
• Months 3 to 12: Steady loss of 1 to 1.5 kg per week
• Month 12 to 18: Most patients reach 60 to 80 percent excess weight loss
• Year 2+: Weight stabilises. Maintenance depends on adherence to dietary guidelines.

Metabolic Benefits Beyond Weight Loss

Gastric bypass does more than help you lose weight. The metabolic changes are profound:

• Type 2 diabetes remission in up to 80 percent of patients, often within weeks of surgery
• Blood pressure normalisation in 60 to 70 percent of hypertensive patients
• Sleep apnoea resolution in most patients
• Improved cholesterol and reduced cardiovascular risk
• Significant improvement in joint pain and mobility

Lifelong Nutritional Requirements

Because bypass reduces nutrient absorption, you will need to take supplements for life. This is non-negotiable and essential for your long-term health:

• Bariatric-specific multivitamin daily
• Vitamin B12 (monthly injection or daily sublingual)
• Calcium citrate (not carbonate) daily
• Iron supplementation, especially for women
• Vitamin D daily

All-Inclusive Package

• Free online consultation with BMI assessment and medical review
• Laparoscopic Roux-en-Y gastric bypass procedure
• 3 to 4 night hospital stay with dedicated bariatric nursing
• 5-star hotel accommodation pre and post hospital
• Private VIP airport transfers
• Post-operative medications and nutritional supplements starter kit
• Personalised nutrition plan from our bariatric dietitian
• 12-month follow-up programme via WhatsApp

The Next Step: Body Contouring

Many gastric bypass patients choose body contouring surgery 12 to 18 months after reaching stable weight. Estetica Istanbul offers multi-stage package pricing for post-bariatric procedures including tummy tuck, arm lift, thigh lift, and breast lift. We plan your entire journey from day one.

Book Your Free Consultation

Take the first step toward a healthier life. Contact us via WhatsApp or the form on this page for a confidential BMI assessment and personalised treatment plan. Our bariatric team will answer every question honestly, including whether bypass is the right procedure for your situation. No obligation, no pressure.