Gastric bypass surgery is when the surgeon makes a small pouch out of the stomach and reconnects it to the small intestine. The stomach remains intact (ie. it is not removed from the body), however there is a small pouch (30-40mls) - the size of an egg, that prevents too much food or fluid being consumed. The new stomach is attached to the middle of the small intestine. This allows some mis-match absorption of foods and restricts the food allowed into the stomach. This leads to greater suppression of hunger and appetite and subsequent weight loss. With less food being absorbed, there is a greater need of vitamin and mineral supplements.
Figure 1: Roux-en-Y Bypass (Gastric Bypass)
Benefits of Gastric Bypass Surgery:
Negatives of Gastric Bypass Surgery: