This is the figure obtained by dividing the weight and kilograms by the square of the height and meters. It is a widely used international standard to measure the degree of obesity and health.
Body mass index = height and body mass index in kg/m2.
Evaluation criteria:
Body mass index was originally designed as a statistical tool for public health research.
When we need to know whether obesity is the cause of a disease, we can convert the patient's height and weight into body mass index, and then find out whether there is a linear relationship between this value and the incidence.
Because the body mass index mainly reflects the overall weight, it is impossible to distinguish between adipose tissue and non-adipose tissue (including muscles and organs) in weight. People with the same height and weight can calculate the same body mass index, but in fact the amount of fat is different, so the body mass index is actually an indicator of the overall nutritional status.
In the past, it was used as an index of obesity, because it was found that body mass index and body fat were highly correlated statistically; However, under the same body mass index, the body fat rate will still be different.
Asian standard
The traditional WHO adult obesity standard is below 30, but the Asian adult index has recently been changed to 27.5. Asian adults with a body mass index of 23 are now considered overweight, while the ideal index is 18.5 to 22.9.