What happens to the bypassed stomach after a Roux en Y gastric bypass?
No part of the stomach is removed during gastric bypass surgery. The portion of the stomach separated from the pouch still works normally, but it no longer receives food. As a result, stomach acid production declines. The bypassed portion of the stomach does not “shrivel up” or “die off” because the blood supply is unchanged. The stomach stays in the same position and drains digestive juices into the small intestine as it did before surgery.
