The small intestine is cut about 18 inches below the stomach, and is re-arranged to provide an outlet to the small stomach, while maintaining the flow of digestive juices at the same time. The lower part of the stomach is bypassed, and food enters the second part of the small bowel about 10 minutes after the beginning of the meal. There is very little interference with normal absorption of food - the operation works by reducing food intake, and reducing the feeling of hunger. The result is a quick sense of fullness, followed by a very profound sense of satisfaction. Even though the portion size may be small, there is no hunger, and no feeling of having been deprived.
Patients continue to enjoy eating - but they enjoy eating a lot less.
The Gastric Bypass provides an excellent tool for gaining long-term control of weight, without the hunger or craving usually associated with small portions, or with dieting. Although the basic operation and the results are the same as the Gastric Bypass, the method of performing the surgery differs. Patients are usually able to get up and walk within hours after surgery, can breath easier, and move without discomfort. Bowel activity usually is not affected, as it is with an open incision. Most persons find they can return to normal activities within 10 - 12 days, or even sooner.