Gastric resection for weight loss, also known as laparoscopic gastric sleeve resection, can result in a 50% to 60% loss of excess weight. Some overweight patients who need to lose only 10 pounds or so to reach their standard weight are not recommended to undergo the procedure. So is a gastrectomy harmful to the body? Gastric bariatric surgery: Laparoscopic gastric reduction surgery, also known as sleeve gastrectomy (LaparoscopicSleeveGastrectomy), 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 greater part of the stomach is removed along the long axis of the stomach, with the entire fundus removed, leaving a “banana-shaped” stomach with a volume of about 60-80 ml. Evaluation: Sleeve gastrectomy has good therapeutic effect on type 2 diabetes, and is a widely used surgery in Europe for weight loss and diabetes Is gastrectomy harmful to the body? Gastric resection 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 resection does not involve intestinal reconstruction, so there are no long-term sequelae such as anemia or osteoporosis due to vitamin deficiency. Although the procedure is very safe, there are certain things to keep in mind. First of all, the patient’s eating habits may change considerably after surgery, and if he eats too much or too fast, it may cause nausea and vomiting. Some patients may need a longer period of time to change their eating habits. The diet should be mainly liquid for 2 weeks after surgery, soft meals for 2 to 4 weeks and then solid foods can be added gradually, sometimes it may take 3 to 6 months to get used to it.