Gastric bypass surgery is a type of weight loss surgery (bariatric surgery) that changes how your stomach and small intestine handle the food you eat. It reduces the size of your stomach and reroutes part of your digestive system.
This helps with weight loss in two main ways:
Restricts food intake – A smaller stomach means you feel full faster and eat less.
Reduces calorie absorption – By bypassing a portion of the small intestine, fewer calories and nutrients are absorbed.
The result is significant weight loss over time, especially when combined with lifestyle changes like diet and exercise.