With the globalization of the world economy, obesity, a threat to human health, is spreading rapidly around the world. The phenomenon of “global obesity” is attracting great attention from medical doctors all over the world. According to a survey report released by the Pan American Health Organization here recently, in the United States, two-thirds of adults are overweight and one-third of adults suffer from obesity. In Canada, half of the population is overweight, suffering from obesity accounted for 13% of the population. Argentina, Colombia, Mexico, Germany, Finland, Jamaica, Kuwait and the Czech Republic also appear similar phenomenon: at least 50% of the population is overweight, more than 15% of people suffer from obesity. Two worrying trends have recently emerged in obesity: a gradual progression to adolescents and a spread from the first to the third world. Compared to 20 years ago, the number of obese children in the United States has increased by 66%; in Brazil, the number of obese children has increased by 240%. In countries such as Chile, Mexico and Peru, one out of every four children between the ages of 4 and 10 is overweight or suffering from obesity. In 2002, China’s nutrition and health status survey results show: China’s adult overweight rate of 22.8%, obesity rate of 7.1%, the number of 200 million and more than 60 million respectively. The overweight rate and obesity rate of adults in large cities are as high as 30.0% and 12.3% respectively, and the obesity rate of children has reached 8.1%. Compared with 1992, the overweight rate of adults rose 39% and the obesity rate rose 97%. China has become the world’s first “fat country”. Obesity has become a serious public health problem facing China. Obesity is a serious threat to health, and some people call obesity, high blood pressure, high blood cholesterol and high blood sugar “death quartet”. Obesity has been shown to be one of the major obstacles to longevity in humans. Obese patients are more likely to suffer from cardiovascular disease, diabetes, cancer and other diseases, and they face a 50% to 100% higher risk of death than healthy people of normal weight. The World Health Organization has ranked obesity as one of the top 10 major threats to human health. Experts point out that obesity can endanger people’s health from two aspects, on the one hand it can cause physical and mental disorders, especially for young people, the physical appearance of the unattractive and inconvenient life, so that they have low self-esteem, anxiety and depression and other problems; and in behavior can cause shortness of breath, joint pain, swelling and reduced activity endurance. On the other hand, it is closely related to many health-threatening diseases. Data show that obesity is an important risk factor for type 2 diabetes, cardiovascular disease, hypertension, gallstones and cancer. Incomplete statistics from relevant departments show that obesity worldwide is growing at an alarming rate of doubling every 5 years, and the number of direct or indirect deaths caused by obesity has reached 300,000 every year, becoming the second preventable risk factor for death after smoking. Experts also point out that obesity can lead to endocrine and metabolic disorders. The incidence of diabetes in obese patients is significantly higher than in non-obese people, and the incidence can increase 10 times. Obese people have a high incidence of malignant tumors, male obese people have a high incidence of colon cancer, rectal cancer, prostate cancer, female patients have 2-3 times higher endometrial cancer than normal women. In addition, obesity is also easy to make the skin brittle increase, easy to occur dermatitis, rubbing rotten, and easy to combine with septic or fungal infection. Treatment of obesity should be completely distinguished from beauty, the purpose of weight loss is mainly to prevent and control a series of diseases caused by obesity. There are three major misconceptions about weight loss in China: First, most dieters have a misconception about weight loss. 80.7% of the interviewees use weight loss products for the purpose of maintaining a better body shape, and only 24.3% for the purpose of making their bodies healthier. Second, most people think that weight loss is something that can be done in a short period of time, and if they can’t do it, they give up. 95% of the respondents had used weight loss supplements, and about 18% had used weight loss drugs. More than half of them changed their weight loss products frequently. 51.8% of them used a certain product for less than two months. Third, when choosing a weight loss product, they do not ask about the mechanism of action and blindly pursue how many kilos they can lose in the short term. Fourth, 46% of the interviewees think that weight loss is their own personal business and would not consider asking a doctor to help with a weight loss program, and 56% of these people think it can be solved completely on their own. Weight more than 20% of the standard weight or body mass index more than 30 that is obesity. Simple obesity refers to non-endocrine, metabolic and other diseases caused by the increase of body fat. The cause of simple obesity: mainly due to excessive food intake, can have certain genetic factors. Clinical manifestations: the main manifestation of obesity is different degrees of fat accumulation, fat distribution to the neck and trunk or buttocks mainly, significant obesity is often accompanied by heat, sweating, flexible action, easy to feel fatigue; because of the diaphragm elevation often feel shortness of breath, can not tolerate heavy physical activity; serious obesity can have increased blood pressure, left ventricular hypertrophy, the most hands lead to heart failure; some patients can be accompanied by diabetes or hyperlipidemia, easy to Some patients may have diabetes or hyperlipidemia, and are prone to atherosclerosis and ischemic heart or gallstone disease. Treatment (1) Dietary treatment Control excessive food intake, nutrition should be moderate, total daily calories for men is 6270-8360 kJ (1500-2000 kcal), for women is 4900-6270 kJ (1200-1500 kcal); protein is 1 gram per kg of body weight per day, carbohydrate is 150-200 grams per day, the rest is supplemented by fat, and adequate amount of vitamins are given. (1) control the intake of animal fat, low-salt diet, quit smoking and alcohol, change the habit of snacking and sweets. (2) Increase consumption Increase the amount of exercise appropriately to increase the consumption of calories. (3) Drug treatment: ① appetite suppressant commonly used amphetamine, 5-10 mg, taken 3 times a day, or fluphenazine, but the effect is not satisfactory; ② energy-consuming agent with thyroid drugs, such as thyroid tablets 30 mg, 1-2 times a day; ③ lowering blood cholesterol with abbreviated bile amine, glycolic anhydride ester, etc. The above treatment methods are mainly effective for mildly obese people. And, because it is difficult to adhere to the control of diet and sports, many obese people have poor weight loss or weight rebound; and the side effects of long-term drug treatment are great. In a consumer survey conducted in the United States in 1993, the average body mass index of women and men in this group of subjects was 28 and 31, respectively, and the results were disappointing: the average result was that half of the weight lost in the first year of weight loss was subsequently regained, and in the second year most of the remaining people regained their weight to the previous state. After two years, less than a quarter of the people had maintained the weight loss results. Gastric surgery: a last resort Most experts still feel that surgery is the only effective treatment for patients with severe obesity. Vertical gastroplasty is the most commonly used procedure, but sometimes a roux gastric bypass is also used. Both of these methods reduce the available gastric volume. They are effective in the short term for weight loss, but long-term results remain controversial, compounded by irreversible changes in normal gastrointestinal anatomy. If applied correctly, such surgical procedures can indeed save patients’ lives and ensure that the risks posed by surgery are less than the risks to the body caused by continued obesity. The use of alternative surgical procedures has become less and less frequent: in particular, jejuno-ileal bypass is now considered to be indicated only for a few, carefully selected patients. It relies on the principle of fat-attraction reduction and its weight loss results are highly desirable, but its non-invasive nature may lead to serious complications. Laparoscopic gastric banding is one of the newest bariatric procedures, a type of “restrictive surgery” that focuses on reducing the amount of food a patient needs to eat to achieve satiety in order to achieve weight loss. This treatment was first conceptualized by Dr. Kuzmak in the United States, who in 1983 developed an adjustable gastric band made of silicone that is placed inside the patient through traditional open-heart surgery. This band creates a small gastric capsule with an adjustable outlet, which is like a “slimming” operation on the stomach, resulting in weight loss by limiting the patient’s food intake. After the procedure, the patient receives an outpatient adjustment of the gastric band. In recent years, due to the development of laparoscopic surgery, a modified version of the laparoscopic implant was developed in 1993, which we also call “LAGB”. It has been used in more than 40 countries worldwide and has been used in more than 100,000 cases. Many randomized clinical studies have shown that laparoscopic bariatric surgery is superior to traditional bariatric surgery, with the greatest benefit being the reduction of wound abdominal comorbidities. While wound complications and hernias occur in up to 30% of patients undergoing traditional bariatric surgery, laparoscopic surgery completely avoids them. Other benefits include less pain, faster recovery, fewer days in the hospital, and an aesthetically pleasing wound. Currently, laparoscopic gastric banding is arguably the simplest and safest bariatric surgery with few complications and almost no deaths, making it the first choice for weight loss surgery. Because of the simplicity of the procedure and the adjustable nature of the procedure, which can avoid the disadvantages of the traditional gastric septum that can easily cause vomiting and regain weight, it has completely replaced gastric septum surgery and is currently the most performed bariatric surgery in the world every year. The weight loss effect of laparoscopic gastric banding surgery is quite satisfactory. Patients in Taiwan can lose an average of 33% of their excess body weight after one year of use, which is lower than the 53 reported in the UK and 49 in Australia, but similar to the 34.5 to 39.7 in the US and Italy. Although the results of laparoscopic gastric banding are slower than those of septal and gastric bypass surgery, the results of laparoscopic banding are longer lasting, less likely to result in regained weight, and less likely to result in gastrointestinal symptoms such as vomiting and nausea. Weight loss rates of 46.6 and 53.6 at the second and third years were reported in the U.S. Australia reported a weight loss of 57 at 6 years, and Belgium and Germany reported 7 and 8 years of follow-up, respectively.