1.What is morbid obesity? Morbid obesity in Europe and the United States is more than the ideal weight of 45 kg (100 pounds) or more, or the body mass index R40 patients. In Asia, it is generally considered that the body mass index R35 is morbid obesity. 2, what is the body mass index? Body mass index (BMI) is the basic basis for determining the severity of obesity and whether surgery is needed. Body mass index [BMI=weight(kg)/height2(m2)] 3.What is the efficiency of weight reduction surgery? 70-80% of patients have prolonged weight loss after surgery Can weight loss surgery guarantee long-term effective weight control? No. Long-term weight loss requires changes in poor lifestyle habits, and the diet should still be arranged according to the physician’s and dietitian’s instructions after surgery. 4.What weight loss surgery can be used? There are many different surgical procedures that can be used depending on the patient’s condition. These include: adjustable gastric banding, gastric bypass, sleeve gastrectomy, biliopancreatic bypass and duodenal transposition, all of which can be done either open or laparoscopically. 5.What are the advantages of laparoscopic bariatric surgery? Like other laparoscopic surgeries, laparoscopic bariatric surgery is less invasive, faster recovery, shorter hospital stay and fewer postoperative complications than traditional surgery, and most of them can be completed laparoscopically. 6.How long does the surgery take? The surgery time is usually 1-2 hours, some patients may have a longer surgery time. 7.What are the risks of weight reduction surgery? Band limiting surgery has few complications, mainly nausea, vomiting and other gastrointestinal reactions. In contrast, bypass surgery is more traumatic and may have complications such as anastomotic leak, thrombosis, and dumping syndrome. However, their incidence is all very low, around 1-2%. The perioperative mortality rate is less than 1%. 8.Do I have to be in full health before surgery? Many obese patients are accompanied by diseases of various systems, such as: diabetes, hypertension, cardiopulmonary diseases, renal insufficiency, etc.. Before the weight control, these diseases are difficult to completely control, so many patients can’t wait until the body is completely healthy before surgery. 9. Do I need to do pre-surgery examinations? There are a series of tests that need to be completed before surgery to assess whether the patient can tolerate the surgery and whether appropriate adjustments need to be made before surgery. 10.How long do I have to stop working? It will take about 1-3 weeks, depending on the procedure and the patient’s original physical condition. 11.How much can I eat after the surgery? The specific diet plan should be made by the surgeon, patient and dietitian. 12.What kind of food should I not eat after surgery? Start eating a liquid diet after surgery, then gradually transition to a high quality small block diet alternating with liquid. Avoid high sugar diet. 13.How much weight can I lose after surgery? Most patients will lose weight smoothly in the first year after surgery, with many patients losing more than 50 kg. In some patients, the weight loss lasts for more than two years and the weight loss is more than 100 kg. 14.How long will I be hospitalized? The hospital stay after surgery is 3-5 days, depending on the type of surgery and the patient’s recovery. 15.Do I need any special care after I go home? The vast majority of patients do not require special care, except for those who have mobility problems before surgery.