Sleeve gastrectomy is performed by creating a thin tube and a thin and long pouch with a volume of 50-100 ml. Anastomosis is performed by bringing the intestine of the intestine, which is measured 150-200 cm forward, from the beginning of the small intestine (treitz) to the formed pouch. In addition to minimizing gastric volume, the patient loses weight due to the passage of food from the first 150-200 cm of the small bowel. Metabolic control is provided for comorbid diseases.