Gastric Bypass Surgery is a form of bariatric surgery (or weight-loss surgery) in which a portion of the stomach is stapled off and rendered unusable. The intestine is then reattached to the smaller portion of the stomach. With the newly reduced capacity of the stomach, patients of gastric bypass surgery cannot eat as much food as they did before because they feel “full” much quicker than before.
More definitions:
“A type of operation that combines the creation of a small stomach pouch to restrict food intake and the construction of bypasses of the duodenum and other segments of the small intestine to cause malabsorption (decreased absorption of nutrients).” -WebMD
“Roux-en-Y gastric bypass surgery, or simply gastric bypass surgery, is a procedure almost exclusively used in surgical weight-loss applications to correct morbid obesity. The procedure involves stomach stapling to reduce the stomach to a “pouch” of 30-60 mL (1–2 fl. oz.) in capacity and connecting this pouch at a point midway along the small intestine.” -Wikipedia
“An operation where a small gastric pouch is created and the remainder of the stomach bypassed (by the food).” -Florida Bariatric Center
