In recent 10 years, the dietary status of urban and rural residents in China has obviously improved, the average height and weight of children and adolescents have increased, and the prevalence of malnutrition has decreased; On the other hand, the incidence of various chronic diseases caused by unreasonable dietary structure and reduced physical activity of some people is increasing year by year, especially obesity has become a prominent problem threatening national health. According to the British Medical Journal, the obesity problem in China is increasing at an alarming rate. Nearly 15% of the population is overweight, and the childhood obesity has increased 28 times in 15 years.
Obesity itself is a chronic disease and a hotbed of many common chronic diseases. The risk of chronic diseases in obese people is greatly increased, and the probability of cardiovascular and cerebrovascular diseases, tumors and diabetes in people who are not obese but only overweight is significantly higher than that in people with normal weight. In addition to the above chronic diseases, obese people are also prone to osteoarthropathy, fatty liver, cholelithiasis, gout, obstructive sleep apnea syndrome, endocrine disorders and other diseases.