Bariatric surgical procedures cause weight loss by restricting the amount of food the stomach can hold or the combination of both malabsorption (lesser absorption of nutrients) and gastric restriction (smaller stomach). Bariatric often results in hormonal changes. The most common bariatric surgeries are Sleeve Gastrectomy, Gastric Plication, Biliopancreatic Diversion with duodenal switch and bypass, Laparoscopic Adjustable Gastric Band (LAGB) and Gastric Bypass. Every surgery has its advantages and disadvantages