For the fatter obese people, they are afraid of obesity and also afraid of the dangers of gastric reduction surgery, so are there any after-effects of gastric reduction? Gastric reduction surgery method? Gastric reduction surgery is called laparoscopic gastric reduction surgery, also known as sleeve gastrectomy. The principle of gastric reduction surgery is to use laparoscopy 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. Gastric reduction surgery is quite a hot topic in the bariatric surgery medical community, and its popularity has increased significantly. Because the surgery cuts off 80% of the stomach volume, in addition to reducing the amount of food eaten, it also reduces the production of the appetite stimulating hormone Ghrelin, and therefore the appetite. Within two years after the surgery, about 10-15 BMI or 70% of the excess weight can be lost. For those who have a high BMI (over 40) and have difficulty reducing their appetite, gastric reduction surgery can achieve the desired weight loss. Are there any after-effects of surgical weight loss? Gastric reduction surgery is somewhere between gastric bypass and gastric banding in terms of effectiveness and safety, making it a fairly “middle of the road” procedure. If compared to gastric bypass, gastric reduction surgery does not perform intestinal reconstruction, so there are no long-term sequelae such as anemia and osteoporosis due to vitamin deficiency. So which patients are suitable for minimally invasive weight reduction surgery? Those who have one of the following 1~5 can be considered for surgical treatment: 1. Simple obesity with BMI>32kg/m2 is recommended for weight reduction surgery; 2. Age 16 to 65 years; no other contraindications to abdominal surgery, etc.; 3. Surgery can be recommended at the discretion of men with waist circumference>90cm and women with waist circumference>80cm; 4. Stable or steadily increasing weight for more than five consecutive years with BMI≥ 32kg/m2; 5. Confirmation of the emergence of metabolic disorder syndrome associated with obesity. For example: type 2 diabetes, fatty liver, cardiovascular disease, hyperglycemia, hyperlipidemia, hypertension, sleep apnea syndrome, etc., and weight loss is predicted to be effectively treated.