Bariatric surgery for weight-loss has a variety of surgical procedures for people who are obese and are in need to get back to a better shape and better health. In bariatric surgery, weight loss is achieved by reducing the size of the stomach through implanting of medical device or by surgically removing a portion of stomach or by way of by passing the small intestines a small pouch. These surgeries i.e. gastric banding (implanting of medical device), sleeve gastrectomy or biliopancreatic (duodenal switch) and gastric by-pass surgery (re-routing of food from small intestine to a small pouch) in all form bariatric surgery.