A vertical sleeve gastrectomy or simply sleeve gastrectomy is a purely restrictive procedure that limits the amount of food a person can consume. Restrictive bariatric surgery, and specifically vertical sleeve gastrectomy, aims to reduce the overall size of the stomach. In this procedure, a portion of the stomach is functionally removed from the digestive system through a vertical line of staples. The remaining "banana shaped” stomach pouch is connected to the first part of the small intestine (duodenum). With most (approximately 85 percent) of the stomach removed, large amounts of food simply cannot be eaten because there is very little stomach left to collect it. Gastric sleeve surgery is a relatively new procedure for weight loss surgery, but has been shown to yield weight loss results that are similar to that of Gastric Bypass surgery.