Body Mass Index (BMI), that is, body mass index (BMI), is an index closely related to body fat, which mainly reflects overweight and obesity. Because the body mass index calculates the proportion of body fat, it is more accurate to measure the risk of heart disease, hypertension and other diseases because of overweight than to identify them simply by weight. In particular, the body mass index is not suitable for everyone. If you belong to the following situations, then the body mass index is not suitable for you. The world standard of obesity is that the body mass index (BMI) is in the normal range of 18.5 to 24.9, the BMI greater than 25 is overweight, and the BMI greater than 30 is obese. Asian obesity standard: Asians are too young to be measured by the world obesity standard. For example, when the Japanese body mass index is 24.9, the risk of hypertension will increase by three times; In China, the mortality rate of body mass index is the lowest, which is 23.7. The higher the mortality rate, the greater the initial increase. Experts believe that the obesity standard of Asians should be that the body mass index is normal at 18.5-22.9, the body mass index over 23 is overweight, and the body mass index over 30 is obese. China obesity standard: China experts believe that although China people belong to Asian race, the upper limit of the normal range of body mass index should be lower than the Asian standard. Some experts suggest that the best value of China people's body mass index should be 20-22, with a body mass index greater than 22.6 as overweight and a body mass index greater than 30 as obesity. China people's measurement standard: body mass index < 20 is slightly thin; 20