Question 1

What is a healthy BMI range?

Accepted Answer

Under the WHO standard, a BMI of 18.5-24.9 is considered normal weight. Below 18.5 is underweight, 25.0-29.9 is overweight, and 30.0 or above is obese. Under the Asian (Chinese) standard, a BMI of 18.5-23.9 is normal, 24.0-27.9 is overweight, and 28.0 or above is obese.

Question 2

How is BMI calculated?

Accepted Answer

BMI (Body Mass Index) is calculated using the formula: BMI = weight (kg) divided by height (m) squared. For example, a person who is 170 cm tall and weighs 65 kg has a BMI of 65 / (1.7 x 1.7) = approximately 22.5.

Question 3

Is BMI an accurate measure?

Accepted Answer

BMI is a simple weight assessment tool suitable for most adults. However, it cannot distinguish between muscle and fat mass. For athletes, pregnant women, and the elderly, BMI may not be accurate. It is recommended to combine it with other indicators such as body fat percentage for a more comprehensive assessment.

Question 4

What is the difference between WHO and Asian BMI standards?

Accepted Answer

The Asian standard has stricter definitions for overweight and obesity: a BMI of 24 or above is considered overweight and 28 or above is obese, whereas the WHO standard uses 25 for overweight and 30 for obese. This is because Asian populations tend to develop metabolic disease risks at lower BMI levels.

BMI Range	Category	Health Risk
< 18.5	Underweight	Nutritional risk
18.5 - 23.9	Normal	Low risk
24.0 - 27.9	Overweight	Moderate risk
≥ 28.0	Obese	High risk

BMI Calculator

BMI Reference (Asian Standard)

BMI Calculator

BMI Reference (Asian Standard)

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