Laparoscopic sleeve gastrectomy (LSG) has recently been promoted as a stand-alone bar- iatric procedure that removes 60% to 85% of the stomach longitudinally, resulting in a small pouch resembling a sleeve (hence the name) or long thin banana (Fig. 14.5). Like RYGB, LSG removes a majority of the stomach, which reduces ghrelin hormone levels and thereby decreases hunger. Other hormones involved in food intake and insulin sensitivity