In many respects, the Gastric Bypass is considered the “gold standard” in weight loss surgery. With a known excellent safety profile and very durable results, the bypass has been performed for well over 40 years and has shown its value in reversing diabetes and getting rapid results. First the stomach is separated into a small pouch about the size of a large egg. Then the intestine is divided a few feet down and one end is attached to the new stomach and the other end back to itself, creating the “Y” in Roux-en-Y Gastric Bypass. This limits the amount of food one feels full with and decreases hunger. Also a small amount of malabsorption limits the calories one can absorb. The Gastric Bypass is the most powerful of the operations we offer. With that increased power there are also more side effects. Therefore it is more important that anyone getting this surgery stick closely to an appropriate diet and vitamin regimen for the best results and least problems afterwards.