What does your BMI really tell you?

Have you heard of the BMI? The body mass index (BMI) is a metric based on your height and weight, and it is used to determine if a person is obese, overweight (but not obese), has a normal weight, or is underweight.

However, the BMI has some drawbacks. It may not be the best way to size up your shape and it says nothing at all about your fitness level. So, how useful the BMI really is?

The BMI, calculated using a person's height and weight, breaks down into four categories:

(1) Underweight: BMI below 18.5
(2) Normal: BMI ranging between 18.5 and 24.9
(3) Overweight: BMI ranging between 25 and 29.9
(4) Obese: BMI of 30 or higher

Some specialists say that the BMI can be used by a doctor or a nurse as a quick screening tool, but it is not enough to just look at a number. It doesn't reveal anything about your body composition - how much of your weight is fat, and how much is muscles and tissue and it doesn't tell anything about the risk for diseases, especially diabetes and heart disease....