Published on February 13th, 2013 | by George Conte0
Body Mass Index (BMI)
The BMI index is a valid measure of the nutritional status of the individual. It can interpret differences in body composition and define the level of obesity considering the weight to height ratio but ignores the size of the human skeleton.
The BMI values tend to increase with age. If the BMI is over 27 it indicates obesity and increased risk of health problems such as hypertension, diabetes and cardiovascular problems.
|Classification||BMI (kg/m2)||risk of health problems|
|Moderate underweight||16 to 16.99|
|Slightly underweight||17 to 18, 49|
|Normal||18.50 to 24.99||Low|
|Overweight||25 to 29.99||Moderate|
|Obesity 1st grade||30 to 34.9||Increased|
|Obesity 2nd grade||35 to 39.9||Greatly increased|
|Obesity 3rd grade||≥ 40||Too much increased|
|extreme obesity||≥ 60||Abnormally increased|
Desirable BMI in relation to age:
|Age (years)||BMI (kg/m2)|
|19 -24||19 -24|
|25 -34||20 -25|
|35 to 44||21 to 26|
|45 to 54||22 to 27|
|55 to 65||23 to 28|
|> 65||24 to 29|
The BMI tables are not indicative of the distribution of body fat, a factor that affects the risk of morbidity. We can easily calculate body fat percentage by using skin fold calipers.
These values of BMI do not apply to athletes like bodybuilders (increased weight due to increased muscle mass), pregnant women and children in development. Due to different body compositions they have different limits on the values of BMI.