Gastric Bypass (Roux-en-Y gastric bypass) is a surgical procedure that aims to achieve significant weight loss by reducing the size of the stomach and the absorption of food. The procedure involves creating a new, smaller stomach pouch and bypassing part of the small intestine to limit food intake and calorie absorption.

Gastric Bypass provides patients with significant and rapid weight loss; gastric bypass surgery is also beneficial for treating obesity-related diseases such as type 2 diabetes, heart disease, high blood pressure or high cholesterol.

Gastric Bypass is one of the most common types of bariatric surgery, combining restrictive and malabsorptive procedures.