Body Mass Index BMI
Weight Assessment & Weight Related Risk Measurement System for Optimum Weight Management
Body Mass Index - BMI (See Below for BMI Calculator)
What is Body Mass Index?
Body Mass Index (BMI) is a height/weight formula used by health and weight professionals around the world to assess a person's body weight. From your body mass index number you can see if you are underweight, normal weight, overweight or obese.
BMI is a good gauge of the average person's weight status, including their total body fat, and an accurate predictor of health risks that flow from overweight and obesity. In short, the higher your BMI, the greater the risk of developing additional health problems.
Body Mass Index Formula
BMI equals a person's weight in kilograms divided by height in meters squared. Or: BMI=kg/m2.
How to Calculate Your BMI
Follow instructions below, or else simply
1. Measure and record your weight in pounds
You are 5 feet 4 inches (64 inches)
1. Measure and record your weight in kilograms
Or: BMI = Weight [in kilos] divided by (Height [in meters] X Height [in meters])
You are 1.57 meters tall (5 feet 2 inches)
Body Mass Index Results - Healthy Weight - Overweight
In June 1998, the US Federal Government announced guidelines which create a new definition of a healthy weight - a BMI of 20-24.99. So now a BMI of 25 to 29.99 is considered overweight.
Body Mass Index - Underweight, Normal Weight, Overweight, Obese
BMI conclusions vary slightly according to gender. Here is a general summary of weight-status based on BMI.
Under 20 (19 for women) = Underweight
Body Mass Index and Health Risks
BMI is important because if your BMI is high, you are at greater risk of developing certain illnesses. By being aware of your BMI and changing it, you reduce your risk considerably.
Some of the diseases/illnesses that can be caused by a heightened BMI:
Disease Risk According to Body Mass Index (BMI)
Body Mass Index (BMI) Disease Risk
BMI of < 20.00 - Risk = Moderate to
Body Mass Index - Drawbacks
Using BMI to predict overweight has its limitations. For example, one variable BMI fails to consider is lean body mass. Thus it is possible for a healthy, muscular individual with very low body fat to be classified obese using the BMI formula. So if you are a trained athlete, your weight based on your measured percent body fat would be a better indicator of what you should weigh.
Also, BMI doesn't take frame size into account, so people with stockier builds may be considered overweight even if they don't have a lot of body fat. One final problem with BMI is that different authorities translate the information differently - they disagree slightly on what BMI range constitutes underweight, normal weight, overweight and obesity - which can cause some confusion in the results.
BMI Drawbacks - A Summary
BMI is not a good predictor of overweight for:
Enhancing Your Body Mass Index Result
As outlined above, BMI is not a perfect indication of total body fat or lean body mass. One way of enhancing BMI results is to measure your waist circumference. Even this is not an absolute guide to your percentage or total of body fat, but it does provide information on the location of your body fat. Although total body fat is still more important regarding weight-related health risks, location of body fat is also thought to be a highly relevant health consideration.
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