At Nationwide Children’s Hospital, we offer three types of bariatric (weight loss) surgery. All of these surgeries cause restriction in the amount of food that can be eaten at one time, so you feel full faster. The gastric bypass also causes malabsorption, which keeps the intestines from absorbing some calories that otherwise would be stored as fat. Weight loss is fastest with gastric bypass and slowest with the laparoscopic adjustable band. Weight loss with the gastric sleeve is somewhere between the bypass and the laparoscopic adjustable band. Of course, the weight loss for any surgery depends on how well you follow the recommended nutrition and exercise program.
After gastric sleeve surgery, food will travel down your throat and enter the tube-like sleeve created by removing 80% of your stomach and stapling closed the rest of the stomach.
With gastric bypass surgery, a small pouch is created by stapling closed the top portion of the stomach, separating it from the lower portion.