There are many ways in which fitness and overall health can be measured. One of the most common ways is using theBMI, or Body Mass Index.
BMIis simply a calculation that takes into account your weight in kilograms in relation to your height in meters squared. In other words:
BMI= weight (kg)/[height (meters)2]
As you can see, there is no room in this calculation for accounting for differences in weight based on how much body fat a person has. You can have two 29-year old women who both are 64″ tall and weigh 150 pounds. However, one of them may only have 20% body fat, while the other may have a higher body fat and a 40″ waist. So, who is healthier?
Well, your doctor probably isn’t going to tell you. Not because he or she doesn’t want you to know, but because they don’t know.
You know how it goes when you go for your check up. They take your weight and vitals and the doctor tells you if you’re overweight based on yourBMI.
Here’s the fundamental flaw withBMI: you can have aBMIthat indicates a person being overweight, but, in reality, that person may have a higher percentage of lean muscle mass (your weight without the body fat). When that is the case, the medical provider should be able to look at other indicators of health instead of just the weight on the scale.
When looking atBMI, the following numbers are guidelines are used to indicate underweight, normal weight, overweight, and obese