Compared with conventional weight loss methods, the advantages of gastric bypass weight loss surgery are fast, obvious weight loss effect, will not rebound, for obesity combined with diabetes, high blood pressure patients, control blood sugar, blood pressure effect is more obvious. So are there any after-effects of gastric bypass surgery? Gastric Bypass Surgery: Gastric bypass surgery refers to a series of similar surgical procedures used to treat obesity, with the common feature that the surgery first divides the stomach into upper and lower portions, a smaller upper portion, and a larger lower portion, and then truncates the small intestine, rearranging the position of the small intestine to change the pathway of food through the digestive tract, slowing down the rate of gastric emptying, shortening the small intestine, and reducing absorption. By 2005 surgeons had developed several different alignment options, forming several branches of gastric bypass surgery. According to the National Center for Health in 2008, gastric bypass surgery has replaced gastric reduction surgery as the most popular weight loss surgery in the United States since 2000, with about 100,000 cases performed annually. Method: On the one hand, by building a small gastric sac in the upper part of the stomach to limit food intake, and on the other hand, by anastomosing the distal jejunum and the small gastric sac, food is bypassed through the large part of the stomach, the duodenum, and the first section of the jejunum, thus greatly controlling food intake and absorption. Principle: Changing the intestinal structure, closing most of the stomach functions, reducing the space of the stomach and the length of the small intestine. Advantages: Weight loss is obvious and the treatment results can be expected to last for a long time. Gastric bypass surgery can reduce 60-80% of your excess body weight, and the results will be even better if your postoperative diet, lifestyle and exercise habits are well coordinated, and with the support and help of a professional health manager. Are there any after-effects of gastric bypass surgery? Gastric bypass surgery does not remove any organ of the human body, does not damage the integrity of the gastrointestinal tract, and does not change the inherent physiological state of the gastrointestinal tract, does not affect eating and nutrient absorption, and causes minimal harm to the human body. Therefore, gastric bypass surgery will not cause side effects” Gastric bypass surgery has been carried out in the United States, Europe and other countries for more than 30 years, and no side effects have been found in patients after the operation.