Body mass index (BMI) is a calculated value, which is mainly used for statistical purposes.
The concept of "height and body mass index" was first put forward by Belgian statistician and mathematician kettler in the middle of19th century.
First, the normal value:
Body mass index (BMI) is a commonly used international index to measure obesity and health. The normal body mass index is between 20 and 25. If it exceeds 25, it means overweight, and if it exceeds 30, it means obesity.
Second, the clinical significance:
Abnormal results: the body is too thin and the body is too fat.
People who need to be examined: people who are too thin and too fat.
Extended data:
Statistical differences of body mass index
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 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.
References:
Baidu encyclopedia-body mass index