Body mass index (BMI) is a reference index to evaluate the ratio of weight to height.
Its calculation formula is weight (kg) divided by the square of height (m) (BMI = kg /m2).
It is generally recognized that 18 to 25 is a healthy standard weight.
BMI(Body Mass Index), the body mass index, is an index closely related to the total body fat, which mainly reflects systemic overweight and obesity. Because BMI calculates the proportion of body fat, it is more accurate to measure the risk of heart disease, high blood pressure and so on because of overweight than simply to identify by weight. In particular, it is important to emphasize that BMI is not suitable for everyone. If you belong to the following situations, then the BMI index is not suitable for you.
1. Under age 18 years old.
2. Being an athlete.
3. I am doing weight training.
4. Pregnant or breastfeeding.
5. Old people who are weak or sedentary.
In addition, we don't recommend using BMI to measure whether a person's weight is standard or not, and then decide to make corresponding adjustments in diet and exercise. If you think that the result calculated by BMI is incorrect, please discuss it with your doctor and ask for other related tests.
Calculation formula:
Body mass index BMI＝ = weight (kg)/ height (m2)
Ideal weight (kg) = 20? Height m2~~22? Height m2
Description:
The world standard of obesity is: BMI is in the normal range from 18.5 to 24.9, BMI greater than 25 is overweight, and BMI greater than 30 is obese. Asian standard of obesity: Asians are too small to be measured by the world standard of obesity. For example, when the BMI of Japanese is 24.9, the risk of hypertension will increase by three times; In China, the mortality rate of BMI is the lowest at 23.7, and the higher it is, the higher it starts to rise. Experts believe that the obesity standard of Asians should be that BMI is normal at 18.5-22.9, BMI is over 23 for overweight, and BMI is over 30 for obesity. China standard of obesity: Chinese 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 suggested that the best value of China people's body mass index should be 20-22, with a BMI greater than 22.6 as overweight and a BMI greater than 30 as obesity.