When it comes to gastrectomy, its principle is to use laparoscopy to cut out the large curve of the stomach vertically, so that a small stomach sac of about 150cc is formed, which can hold about 4-5 ounces of food. Because the surgery will cut out 80% of the stomach volume, in addition to reducing the amount of food eaten, it will also reduce the amount of hormone secretion that stimulates appetite, so appetite will also be reduced. So how much weight can I lose with a sleeve stomach? Sleeve gastrectomy for weight loss: The full name is laparoscopic gastric reduction surgery, also known as sleeve gastrectomy. The principle of gastric reduction surgery is to use a laparoscope to cut out the large curve of the stomach vertically, so that the stomach forms a small gastric sac of about 150cc, which can hold about 4-5 ounces of food. It has the advantage of not requiring the placement of foreign objects in the body and the procedure is remarkably effective for weight loss. Method: 2-6 cm of the sinus above the pylorus is preserved in the direction of the greater curvature of the stomach, and the larger part of the stomach is removed along the long axis of the stomach, and the entire fundus is removed, leaving a “banana-shaped” stomach with a volume of about 60-80 ml. Principle: To reduce the volume of the stomach and decrease the secretion of hormones that stimulate the production of hunger. Advantages: It does not change the physiological state of the gastrointestinal tract and does not interfere with the normal process of digestion and absorption of food. Evaluation: Sleeve gastrectomy has good therapeutic effect on type 2 diabetes and is a widely used surgery for weight reduction and diabetes in Europe. How many pounds can I lose with the surgery? It is a gradual process, but you can basically lose about 50 pounds three months after discharge from the hospital. But not all people can lose up to 120 pounds. If your original weight is 250 pounds, losing up to 120 pounds is achievable.