Gastric bypass surgery: Gastric bypass surgery, known as laparoscopic Roux-en-Y gastric bypass surgery, is a procedure that changes the structure of the intestine and shuts down most of the stomach’s function. The surgery divides the patient’s stomach into two parts, so that only 1/6-1/10 of the original stomach is used to hold food. Then, a “bypass” is made at the incision of the small stomach to connect the intercepted section of the small intestine, rearranging the position of the small intestine, changing the pathway of food through the digestive tract, slowing down the emptying of the stomach, shortening the small intestine, and reducing absorption. The purpose of weight loss is achieved. Principle: Changing the structure of the intestine, shutting down most of the stomach function, reducing the space of the stomach and the length of the small intestine. Benefits: Significant weight loss and long-term retention of the treatment effect is expected. In 2004, the National Institutes of Health announced the latest evaluation of gastric bypass surgery: the most effective medical treatment for morbid obesity is bariatric surgery. Gastric resection surgery 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 a small gastric sac of about 150 cc is formed in the stomach, 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 in weight loss. Principle: Reduces stomach volume and decreases the secretion of hormones that stimulate the production of hunger. Weight loss surgery can reduce 60-80% of your excess body weight, and the results will be even better if your post-operative diet and exercise habits are well coordinated, with the support and assistance of a professional health manager.