Weight loss is achieved by reducing the size of the stomach with a gastric band or through removal of a portion of the stomach (sleeve gastrectomy or bilio-pancreatic diversion with duodenal switch) or by resecting and re-routing the small intestine to a small stomach pouches (gastric bypass surgery).Most weight loss surgeries today are performed using minimally invasive techniques (laparoscopic surgery). The most common bariatric surgery procedures are gastric bypass, sleeve gastrectomy, adjustable gastric band, and biliopancreatic diversion with duodenal switch. Therefore Gastro surgeons, Laproscopic surgeons are well suited to perform bariatric surgery.