The amount of weight you lose — and how fast you lose it — depends on which weight loss surgery you have. Patients who have adjustable gastric banding (Lap-Band®) procedures usually lose weight more slowly the first year than those who have gastric bypass (RYGB) or duodenal switch procedures (DS). In our program the average patient loses between 68 to 78 percent of his or her excess body weight after RYGB or DS and between 60 to 70 percent after vertical sleeve gastrectomy (VSG). Weight loss with gastric banding is less predictable. The amount of weight loss also depends on your age, gender, starting body mass index and your ability to adhere to lifestyle changes necessary to make the surgery a success.
