What is obesity? What are the criteria for obesity?

  Obesity refers to a certain degree of significant overweight and excessive fat layer, a state caused by the accumulation of too much body fat, especially triglycerides. Obesity management is a very important part of health management. We can prevent and control obesity to achieve the purpose of health.  Obesity not only affects work, life, and aesthetics, but also has a certain risk to health. Obesity is currently the third enemy of human health threat after cardiovascular diseases and cancer. Obese people are prone to hypertension, coronary heart disease, fatty liver, diabetes, hyperlipidemia, gout and gallstone disease. Clinical tests have found that the majority of simple obese patients have endocrine disorders, especially hyperinsulinemia, abnormal glucose tolerance test, sex hormone level disorders, high adrenocorticotropic hormone, high leptin and other abnormalities, and adolescent obesity is also likely to lead to obesity reproductive impotence. The scientific management of obesity disease is of great significance to intercept the occurrence of the above diseases.  Obesity standard Obesity refers to the excessive storage of human body fat, manifesting as the increase of fat cells and (or) the increase of cell volume, that is, the whole body fat tissue block increases, and other tissues lose the normal proportion of a state.  BMI is the most commonly used clinical index, BMI = weight (kg) divided by the square of height (m). BMI 30~34.9 for obesity level 1, BMI 35~39.9 for obesity level 2, BMI ≥40 for level 3, the above standards are mainly based on the European data. In the Asia-Pacific region, there is another grading standard: BMI ≥ 23 for overweight, BMI 23 ~ 24.9 for pre-obesity, BMI 25 ~ 29.9 for obesity level 1, BMI ≥ 30 for obesity level 2.