Gastric Bypass

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Gastric bypass surgery restricts the amount of food you can eat and limits the body’s ability to absorb calories. It is the most frequently performed bariatric surgery worldwide.

At the University of Maryland (UM) Center for Weight Management and Wellness, our surgeon has more than 15 years of experience in performing gastric bypass surgeries.

What Happens During Gastric Bypass?

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During a gastric bypass, the surgeon:

  1. Creates a small pouch from the top part of the stomach, with the rest of the stomach sealed off.
  2. Divides the small intestine and connects the lower end to the newly created small stomach pouch.

The procedure bypasses most of the stomach and the upper small intestine, which is where some calories from food are absorbed. Gastric bypass helps weight loss because:

  • The small stomach pouch limits the amount of food that you can eat.
  • The shorter digestive path from stomach to small intestine reduces the amount of calories that your body can absorb.
  • Rerouting the food stream causes changes in gut hormones to suppress your appetite, control blood sugar and help you feel fuller longer.