When the daily intake of calories more than the energy required for consumption, in addition to the form of liver, muscle glycogen storage, almost completely converted to fat, stored in the systemic lipid depot, which is mainly triglycerides, glycogen reserves are limited, fat for the body’s main form of storage of caloric energy. If the regular intake of excessive neutral fat and sugar, the fat synthesis is accelerated, become the external cause of obesity, often in the case of too little activity, such as stopping physical exercise, reduce physical labor or disease recovery period bed rest, postpartum recuperation and other obesity. Here are the causes of simple obesity: 1, genetic factors Most of them are recognized as multi-factorial inheritance, when parents’ physique is inherited to their children, it is not by a genetic factor, but by a variety of genetic factors to determine the children’s physique, so it is known as multi-factorial inheritance, for example, non-insulin-dependent diabetes mellitus and obesity belong to this kind of inheritance. One of the parents is obese, the child has a 40% chance of obesity, if both parents are obese, the child may be obese chance of rising to 70% to 80%. 2, the social environment of the factors Many people have the ability to eat is the blessing of the concept of today’s society, a wide variety of food, a variety of food often lure you, coupled with a meal almost become a common entertainment, which of course becomes the main cause of obesity. 3, psychological factors In order to lift the mood on the worry, emotional instability, many people also eat to vent. This is the cause of eating too much and lead to obesity. 4, and exercise-related factors Exercise helps to burn fat, in daily life, with the development of transport, mechanization of work, reduce the amount of housework, etc., so that the human body to consume fewer calories, on the other hand, because of the intake of energy is not reduced, and the formation of obesity. Fat leads to daily activities more and more slow, lethargy, more again reduce the consumption of calories, leading to a vicious circle, contributing to the occurrence of obesity. In general, the human body daily calories into the difference, depending on age, gender, height, nature of labor and other factors, due to normal neuroendocrine precision regulation, so that the human body weight is relatively stable and not obese. Simple obesity accounts for more than 95% of obese people, generally known as middle-aged obesity is also belongs to simple obesity, but middle-aged obesity, sometimes also hidden symptomatic obesity, so can not be ignored.