RNY (Roux-en-Y) Gastric Bypass is a combined restrictive and malabsorptive obesity surgery — it reduces both the size of the stomach and the absorption of calories. This technique is one of the most widely performed bariatric procedures in the U.S. and Europe.

After the surgery, patients feel full with smaller portions and experience a significant decrease in appetite due to reduced levels of the hunger hormone ghrelin. The procedure also lowers calorie absorption, helping achieve and maintain long-term weight loss.

According to scientific studies, patients lose an average of 30–35% of their initial body weight within the first year. Additionally, the body naturally adapts to healthier eating habits, as high-calorie or sugary foods can cause discomfort — encouraging patients to make better dietary choices.

Performed with laparoscopic (minimally invasive) methods by our expert bariatric surgeons in Istanbul, RNY Gastric Bypass ensures effective, safe, and sustainable results for long-term health improvement.