The principle of gastrectomy is to vertically cut the great curvature of the stomach by laparoscopy, so that the stomach can form a small gastric sac of about 150cc, which can hold about 4-5 ounces of food. Its advantage is that there is no need to put foreign bodies into the body, and the weight loss effect is remarkable. Because surgery will cut off 80% of the stomach volume, in addition to reducing food intake, it will also reduce the secretion of ghrelin, a hormone that stimulates appetite, so appetite will also decline. About 10- 15 body mass index or 70% excess weight can be lost within two years after operation. For people with high body mass index and difficult to reduce their food intake, gastrectomy can achieve ideal weight loss effect. The doctor will make different plans according to the patient's specific situation and decide the cost of the operation. You can go to official website for consultation.