Diabetic surgery, also known as “gastric diversion surgery”, was first used in bariatric surgery, where Westerners had been consuming high fat and high calories for a long time and their weight was rising. Gastric diversion surgery, a new boon for diabetic patients. One comprehensive analysis of 22,094 patients showed that 84% of type 2 diabetes was completely reversed after the procedure, and most patients stopped taking oral medication or insulin therapy before being discharged from the hospital. Francesco Lupino of the Catholic University of Rome, Italy, reported similar results in Mexico, Peru, the Dominican Republic and India in diabetic patients who did not reach morbid obesity after gastric diversion surgery. Some other countries, such as China, Japan, Italy and Belgium, have also done some clinical trials. In the United States, in January 2009 the American Diabetes Association (ADA), the world authority on diabetes treatment, officially included gastric diversion surgery (GBP) in the Guidelines for the Prevention and Treatment of Diabetes, identifying it as a routine treatment for diabetes. The 44th European Diabetes Association (October 2008. Rome, Italy) concluded that type 2 diabetes is expected to be a surgically curable gastrointestinal disease. In Europe, the 45th Annual Meeting of the European Diabetes Research Society on September 29, 2009 confirmed that diabetes has become a surgically curable gastrointestinal disease. Is diabetes surgery only effective for patients with type 2 diabetes with obesity? Many people believe that the procedure evolved from bariatric surgery. Therefore, it is only effective for patients with type 2 diabetes who are obese. It is not effective or effective for normal weight or thin type 2 diabetic patients. In fact, the procedure is equally effective in normal weight or thin type 2 diabetic patients. As you can see from the mechanism of the procedure above, the procedure does not lower blood glucose by reducing the amount of food eaten or the weight of the patient. Of course, for type 2 diabetic patients with obesity, the procedure can reduce the patient’s weight in a controlled and appropriate manner. Numerous experiments have demonstrated that weight loss is related to the length of the common collaterals (the small intestine below the jejuno-jejunal anastomosis). The longer the common collaterals, the less weight loss after surgery; the shorter the common collaterals, the more weight loss after surgery. Therefore, by controlling the length of the common collaterals, the postoperative weight loss of patients can be completely and effectively controlled. In addition, with the stabilization and normalization of the patient’s postoperative blood glucose level, the patient no longer needs to restrict the diet and the patient’s nutritional status will be greatly improved. Many patients who were wasted before surgery will also gain weight after surgery.