Obesity is the source of all diseases, and many patients have a lot of fat body. However, many friends still do not have the correct awareness of obesity. Obesity has been jeopardizing people’s bodies, there is no correspondence to the emergence of disease, they do not know the importance of weight control. For example, young patients are hospitalized for checkups in order to lose weight, thinking that they are healthy, but when they are hospitalized for investigations, they find diabetes, fatty liver and other diseases. There are few cases like this. Many people neglect the importance of medical checkups because they think they are healthy, and I know this because I work in a hospital. Another patient started to inquire about this surgery a year ago, but was hesitant to make up his mind. I told him about the dangers of obesity, but the decision was up to him. He still had not found the right way to reduce his weight and was not doing well, but he found out that he had diabetes a while ago and decided to have the surgery. When we met again, he complained, “It’s not too late to lose weight, is it? I wish I’d had the surgery earlier!” Diabetes is a disease that occurs when the pancreas is damaged. Although high weight people lose weight and their blood sugar returns to normal, the damage to the pancreas is inevitable. The damage to the pancreas is doomed. Individuals do not have the same constitution, and when they are healthy, they cannot predict when they will develop the disease, just like the online story “Zhang Xueliang ate, drank and smoked to live to 101 years old”. A large number of findings have proved that BMI between 18-24 weight is easier to maintain health. And high body weight people with increased morbidity is obviously obesity. The reason why I say these, is that I hope more obese people realize that obesity will bring a lot of diseases, (such as the “three highs”, diabetes, coronary heart disease, sleep apnea syndrome, weight-bearing joint damage, polycystic ovary syndrome, etc.). What the doctor tells the patient is the trend of the disease, and the term “avoiding harm” is more suitable for monitoring one’s own health. We hope that more obese people will realize the dangers of obesity and put “weight control issues” on their agenda. Although, everyone is unique in this world, no matter how confident people in the issue of health is best to be cautious. Because some illnesses can be cured by self-regulation, but more often than not, health is only once, and if the body’s functions have been damaged, it is irreversible.