Obesity is a potential risk factor for diabetes, cardiovascular and cerebrovascular diseases, tumors and other metabolic diseases. The root cause of obesity is that the calorie intake is greater than the calorie consumption for a long time, and excessive calories are stored in the form of fat in the body to bring about obesity. The reporter learned from the You Dao doctors group dietitian, weight loss surgery patients are required to carry out nutritional aspects of the precise assessment, according to the patient’s examination results, dietitians and then nutritional intervention. Many people for nutrition there is a misunderstanding, are thought to cause obesity is the cause of excess nutrition, in fact, it is not, it is understood that the cause of obesity is not necessarily only excess nutrition, but also may be due to the body lack of certain nutrients and the formation of obesity. Recently, our country and nutrition-related chronic diseases present a “blowout” trend, the reason is not only with salt, fat, sugar and other nutritional excess, but also with calcium, potassium, high quality protein deficiency. Food is the material basis of human survival, which supplies the human body with all kinds of essential nutrients. Whether the quantity and quality of nutrients are appropriate, and whether the proportion is appropriate, are essential to maintain the body’s basic metabolism, growth and development, to ensure health and prevent disease. It is not the case that the less you eat the better the effect of weight loss will be. Too low a calorie intake and insufficient nutrients not only have a poor weight loss effect, but are also prone to nutritional deficiency problems. For ordinary people, you can follow the “Dietary Guidelines for Chinese Residents” to make dietary adjustments to the nutritional mix, which is specifically based on the physical condition of the Chinese people, quite a reference value. For patients suffering from obesity and metabolic diseases, they need to strictly control the calories according to the arrangement and requirements of the dietitian. Dietary counseling and nutritional interventions are needed during the postoperative recovery period. Three months after surgery is the dietary transition period, patients should choose reasonable food based on appropriate control of overall calories to ensure adequate nutrition, smooth transition and safe recovery. Dr. Yodo’s dietitians will give each patient the dietary and nutritional interventions that best suit his or her physical condition, so as to help patients with weight loss and metabolism lose weight and reduce sugar to the maximum extent possible.