Up to 60* to 80* per cent of weight loss can be achieved after Laparoscopic Banded Gastric Bypass surgery. Weight loss is the fastest in the first three months, and slows down thereafter. You will continue to lose weight for a year-and-a-half for up to two years. After that, the body stabilizes and does not lose further weight in most cases. Some patients could regain some of the lost weight after 2* to 3* years of surgery if they are not careful about their intake However, you can avoid this, if you follow our exercise, nutrition and lifestyle tips, and maintain a proper follow-up routine.