Gastric bypass is a surgical procedure that helps people loose weight by making changes to their digestive system. During the surgery, the stomach is divided into a smaller upper pouch and a larger lower pouch. The small intestine is then rearranged to connect both pouches. This reduces the amount of food you can eat and limits the absorption of calories and nutrients. As a result, you feel full sooner and absorb fewer calories from the food you eat. Gastric bypass can help people achieve significant weight loss and improve certain obesity-related health conditions. However, it is important to discuss the procedure with your healthcare provider to understand the potential risks and benefits.