What Is BMI

What is BMI, Are you or your children overweight? Current statistics indicate that at least 50% of people in Western society are currently overweight. Additionally, half of those who are overweight (25%) do not recognize it.

What Is BMI
What Is BMI

What is BMI I hear you ask?

In modern society, the latest way for doctors to establish whether a person is overweight is by calculating their BMI. What is BMI I hear you ask? BMI is the short form of 'Body Mass Index'. BMI is a measure of an individuals weight compared to their stature. It is used to give an estimate of how much body fat is being carried by an individual. It can also provide doctors an idea of what a persons threat of suffering from size related health issues such as cardiac disease, stroke, diabetes and elevated blood pressure is.
There are four key levels of interpretation of BMI results in adults, although these can also be split into six:

  1. BMI below 16 - Severely underweight

  2. BMI of 16-18 - underweight

  3. BMI of 18-25 - Healthy weight range

  4. BMI of 25-30 - overweight

  5. BMI of 30-40 - Obese

  6. BMI over 40 - Morbidly Obese
While the calculation of BMI in kids is the same as it is for adults, the interpretation is different because kids are still developing. BMI results for children are broken down into BMI for Age and BMI for sex. A childs BMI is calculated and compared to other children of the same age and sex and displayed as a percentage. In children, it is possible to have a BMI of 18 and still be classed as obese. The categories for children are:

  1. Lowest 5% of BMI - underweight

  2. Within 5-85% of BMI - Healthy weight range

  3. Within 85-95% of BMI - overweight

  4. In top 5% of BMI - Obese
How to calculate BMI.
There are two ways to work out BMI depending on whether your method of measurement is imperial (pounds and inches) or metric (kilograms and metres):
In the Imperial system of measurement the procedure is weight (lb) divided by height (in) divided by height (in) x 703
So if you weigh 198.42lb and are 66.5" high then the procedure comes out as 198.42 / 66.5 / 66.5 x 703 = BMI of 31.54
By Metric the procedure is weight (kg) divided by stature (cm) divided by stature (cm) x 10,000
So using the same figures converted is 90kg / 168.91 / 168.91 x 10,000 = BMI of 31.54
It must be noted that it is feasible to have a high BMI without being overweight as BMI is calculated on overall weight and does not differentiate between the weight of fat or muscle. Therefore, a person who is tremendously fit or does weight training can have a high BMI without being overweight. In such cases doctors also use tests such as the skinfold thickness measurement to verify whether a person is hauling unnaceptable amounts of fat.
Children with elevated BMI for their age ought to also undertake extra testing (such as the skinfold thickness measurement) for doctors to verify whether they are in reality overweight. It must be noted that it is unadviseable to put children on low fat diets since they need higher fat intake for growth and development.
So while BMI is not an precise science, it provides a excellent indication of whether a person is overweight in the bulk of cases.
If you believe that yourself or your kid may be overweight it is suggested that you consult your family doctor for advice.



Source: by Julia Bell on http://goarticles.com/article/What-is-BMI-How-to-calculate-BMI-for-Adults-and-Children/2003296/

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