Obesity is the source of all diseases. Since China’s obese population is increasing, more and more people are concerned about the hazards of obesity, such as fatty liver, diabetes, heart disease, hypertension and other common obesity-related diseases are also known to everyone. However, most of the time, become fat is unconsciously occur, and when I? reacted may have reached the stage of overweight, plus weight loss is not a simple matter, so many people will still accidentally suffer from obesity associated with the disease. For people who are already suffering from obesity complications, there are two things that they are definitely concerned about, one is how to lose weight effectively, and the other is whether these complications will also get better after losing weight. Obesity associated diseases are a complex group of diseases, although they are all related to obesity, but the pathology is not the same, so it is not possible to say whether it can be reversed. For example, like diabetes, although obese people suffer from this disease has a lot to do with excess fat, but the ultimate cause of the disease is pancreatic islet insufficiency, unable to secrete enough insulin caused by. After the disease, even if weight loss is successful and body fat percentage decreases, insulin secretion may still be insufficient to effectively control blood sugar. Although weight loss metabolic surgery now allows the body to complete blood sugar regulation through itself alone, the problem of impaired islet function still exists. However, diseases like fatty liver, hyperlipidemia and sleep apnea syndrome, which are purely caused by excess fat, will gradually improve and eventually return to normal as the body fat rate decreases. So whether obesity associated with the disease can be treated with weight loss depends on the specific disease and the severity to determine, we still need to lose weight as soon as possible to reduce the risk of suffering from associated with the disease is the best approach.