Body Mass Index (BMI) - What's it all About?
Body Mass Index (BMI) is a measure of body fat considering height and weight that applies to most adult men and women with weight in kilograms and height being considered in meters.BMI is used in a wide variety of contexts as a simple method to assess how much an individual's body weight departs from what is normal or desirable for a person of his or her height. BMI Prime is a simple modification to BMI system. It is the ratio of actual BMI and the upper limit BMI.
Why use BMI:
- BMI is simple, inexpensive and noninvasive measure of body weight.
- BMI depends only on height and weight and can easily be calculated by individuals with some reasonable accuracy.
- BMI with some considerations can predict the risk of obesity and health risks.
- BMI ignores muscle and bone mass distribution
- BMI doesn't differentiate body fat and muscle mass
- Possible risk of over BMI in people with more body mass like body builders, athletes..
- Unavoidable mislead of BMI in lean people like elderly
BMI levels for adults:
|Below 18.5||Under Weight|
BMI levels for children and adolescents:
|Percentile Ranking||Weight Status|
|< 5th percentile||Under Weight|
|5th percentile to <85th percentile="" td="">||Normal / Healthy weight|
|85th to < 95th percentile||Overweight|
|>= 95th percentile||Obese|