Patients who undergo gastric bypass surgery lose between 100 and 180 pounds. Most of the weight is lost during the first 14 months, although some additional weight can be lost up for up to two years.

The exact amount of weight you will lose depends on your preoperative body mass index (heavier people lose more weight) and your compliance with the dietary instructions.

The charts below demonstrate our patient's experiences to date based on their initial body mass index and can be used to estimate your possible weight loss. You will need to watch your diet very carefully after your weight stabilizes as failure to continue to restrict your intake can result in some weight regain.

Average Weight Losses of Our 1,702 Patients as of 3/11/07