Gastric bypass, also called Roux-en-Y (roo-en-wy) gastric bypass, is a type of weight-loss surgery that involves creating a small pouch from the stomach and connecting the newly created pouch directly to the small intestine. After gastric bypass, swallowed food will go into this small pouch of stomach and then directly into the small intestine, thereby bypassing most of your stomach and the first section of your small intestine.
Gastric bypass is done to help you lose excess weight and reduce your risk of potentially life-threatening weight-related health problems, including:
Gastric bypass is typically done only after you’ve tried to lose weight by improving your diet and exercise habits.
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