The gastric sleeve surgery is a relatively new procedure and it is gaining rapid popularity worldwide. In the late 1980s and 1990s, surgeons started to do the sleeve gastrectomy as part of the duodenal switch operation. Over the years, surgeons noticed that gastric sleeve caused significant weight loss. In the late 2000s and early 2010s, this procedure became increasingly popular. Large datasets, with more than 5 years of follow-up after the surgery, showed sustained weight loss.