In recent times, Shanghai, as the first model city in the country to implement strict garbage classification, has been occupying the hot topic. The crazy thing is that the original garbage classification is not as simple as people think, some “tricky” garbage you simply do not know which category it belongs to, resulting in major netizens have been complaining: wet tissue, no matter how wet is dry garbage; melon seed shells, no matter how dry is wet garbage. In the long run, the implementation of waste separation on the improvement of the environment is directly related to our living environment and the health of future generations, so it is very significant. Likewise, there is another issue that concerns our health that is also classified, and that is obesity. The classification of obesity mainly lies in the cause of obesity and the degree of obesity. Our common obesity is mainly simple obesity, and the other secondary obesity and hereditary obesity is relatively rare, the reason of obesity as long as divided into these three categories. And the degree of obesity 1 degree obesity, 2 degree obesity, 3 degree obesity and very heavy obesity. In different degrees of obesity need to lose weight method also have different. Just like people in the beginning of obesity, often will choose diet and exercise these most common methods, in the early stage of obesity and even still not serious when really is not lost a good weight loss method. But there are still many people because of various factors and “perfect transition” to 2 degrees of obesity and above, to this stage of obesity due to excessive body fat and lead to the body may appear all kinds of obesity associated with the disease, and at this time the body is no longer suitable for diet and exercise this kind of conventional weight loss methods. Weight loss surgery is a surgical weight loss method for people with severe obesity, because the surgery can effectively regulate the body’s digestive and absorption system to control weight, which has a more perfect weight loss mechanism compared to other weight loss methods, and also has a certain guarantee for weight loss effect.