Find out what to expect, including the benefits and risks, if you choose to have gastric bypass surgery.


Weight-loss (bariatric) surgery changes the anatomy of your digestive system to limit the amount of food you can eat and digest. The surgery aids in weight loss and lowers your risk of medical problems associated with obesity.

Gastric bypass is the favored bariatric surgery in the United States. Surgeons prefer this surgery because it's safer and has fewer complications than other available weight-loss surgeries. It can provide long-term, consistent weight loss if accompanied with ongoing behavior changes.

Gastric bypass isn't for everyone with obesity, however. It's a major procedure that poses significant risks and side effects and requires permanent changes in your lifestyle. Before deciding to go forward with the surgery, it's important to understand what's involved and what lifestyle changes you must make. In large part, the success of the surgery is up to you.