In the process of a Gastric Bypass, a small pouch is segmented off from the remaining stomach tissue, ultimately creating a new stomach roughly the size of a golf ball. Then, the middle section of the small intestines is rerouted to the newly created pouch, bypassing the stomach and duodenum. As a result, patients can shed excess weight. Finally, if you’re considering a duodenal switch or gastric bypass, read our latest article comparing the two here.