The Palo Alto Medical Foundation (PAMF) offers the Roux-en-Y gastric bypass procedure. Roux was named for the Swiss surgeon who developed this technique joining the stomach pouch to the small intestine and creating a "Y" shaped intestinal junction.
By reducing the size of the stomach, gastric bypass surgery severely restricts the amount of food you can consume. This surgery is not considered reversible.
Long-term success depends in large part on permanently following a restricted diet and making major lifestyle changes.