For the general simple obesity, every big fat person is from the small fat “evolution”. Delay promotes obesity, when the weight reaches the overweight range, you think it does not matter, do not make the corresponding countermeasures, then is the process of mild obesity to severe obesity. The cruel thing is, the more serious the degree of obesity, the more difficult it is to lose weight, and the more you can’t delay the weight loss. Severe obesity is the most direct manifestation of the body is to the bones and the heart blood supply process to increase the greater burden. Usually we see obese people walking a few steps to start panting is the reason, the heart blood supply pressure is large, the body oxygen circulation is hindered, a small amount of exercise are easy to lead to lack of oxygen. At the same time, when obesity reaches a certain level, the body will also appear with a variety of obesity-related diseases. Common diabetes, fatty liver, sleep apnea syndrome, etc., there are many people because of long-term heavy obesity and body at the same time suffer from a variety of chronic diseases, this situation is no longer a simple problem of weight loss, but involves the issue of life and health. Therefore, for people with severe obesity, time is the biggest enemy. Due to the physical limitations of the severely obese, many conventional weight loss methods are no longer applicable. So far, the only method that can help the severely obese to achieve weight loss and at the same time treat the obesity-related complications of the body is bariatric surgery. Bariatric surgery allows the body to readjust its absorption and digestion functions within the body, allowing the body to readjust to its new environment. Unlike other conventional weight loss methods, surgical weight loss is a systemic project, and the long duration of treatment predetermines the stability of the procedure.