There are several ways to detect obesity. The internationally accepted index is body mass index, and the algorithm of body mass index is: the square of weight (kg)/ height (m). For example, if someone is 1.7m tall and weighs 65kg, then the body mass index is 65/( 1.7 * 1.7) = 22.

Second, waist circumference.

Waist circumference can roughly measure the distribution of fat in the body, and can detect whether you have central obesity. The measurement index of waist circumference is divided into World Health Organization standard and China index. The index of the World Health Organization is that the waist circumference of men should be less than 95 cm and that of women should be less than 80 cm. China's index is that men's waistlines should be less than 85 cm and women's waistlines should be less than 80 cm. If it exceeds this range, it is obesity.

Third, the waist-hip ratio

Waist-hip ratio is the ratio of waist circumference divided by hip circumference. The standard in Asia is less than 0.9 for men and less than 0.8 for women. If it exceeds, it is obesity.

Fourth, the standard weight

The standard weight is height (CM)- 105= kg, and it is overweight if it exceeds 10%; If it exceeds 20%, it is obesity; If it exceeds 20-30%, it is mild obesity; If it exceeds 30-40, it belongs to moderate obesity; If it exceeds 50%, it belongs to moderate obesity. The weight is even and normal at the standard plus or minus 10%.