Monday, October 6, 2008

Body Mass Index

The body mass index (BMI) is a statistical measurement which compares a person's weight and height. Though it does not actually measure the percentage of body fat, it is a useful tool to estimate a healthy body weight based on how tall a person is. Due to its ease of measurement and calculation, it is the most widely used diagnostic tool to identify obesity problems within a population.

Body mass index is defined as the individual's body weight divided by the square of their height.

\mathrm{BMI} = \frac{\mathit{weight} \ \mathrm{(kg)}}{\mathit{height}^2 (\mathrm{m^2})}

The healthy BMI for men and women in Asia is between 18.5 - 22.9.

Category

BMI Range – kg/m2

Starvation

Less than 14.9

Underweight

From 15 to 18.4

Normal

From 18.5 to 22.9

Overweight

From 23 to 27.5

Obese

From 27.6 to 40

Morbidly Obese

Greater than 40

Adults whose BMI is between 18.5 and 22.9 have a low risk of developing heart disease and other health problems such as diabetes. Those with a BMI between 23 and 27.4 are at moderate risk while those with a BMI of 27.5 and above are at high risk of heart disease and other health problems.

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