A gastric plication or a sleeve gastrectomy is created, by plicating or sectioning the greater curvature of the stomach, such as in the Plication and Sleeve techniques respectively. Subsequently, the duodenum is transected respecting the pylorus. A duodenum-intestinal anastomosis is carried out, 250 to 300 centimeters from the ileocecal valve. Therefore, the common channel, where nutrients are absorbed becomes 2.5 metres long. Also it is an excellent redo surgery after a failed gastric plication or sleeve gastrectomy.