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Roux-en-Y Gastric Bypass Procedure

Second most common weight loss surgery performed in the U.S. (less than half as much as sleeve gastrectomy) and was previously considered the gold standard of weight loss surgery.

Dr. Feng creates a small, upper stomach pouch about 1-2 ounces in size, dividing it from the lower stomach. This significantly restricts the volume of food that can be eaten if solid protein eaten first. This reduces the amount of calories that can be eaten. He then divides the small intestine to create a Y-shaped section to attach to the stomach pouch. The lower stomach and a portion of the small intestine is bypassed which causes malabsorption of certain nutrients, with no significant carbohydrate or fatty food malabsorption. The procedure minimally limits the nutrients the body can absorb because of the bypass.

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