You may be tempted to measure how you’re doing on the way to your health goals with body composition read-outs on scales and other outputs related to body fat analytics, but how accurate are they? If the device used is one that has you stand on a scale or hang on to handles of some sort, the accuracy of those numbers is very limited.

Those devices are based on impedance technology—the resistance of a very small current passed through your body. It actually can be very accurate when it comes to total body water, something very important for people with congestive heart failure. Everything else is based on algorithms that assume specific characteristics of the body. Those may be valid assumptions, but the variability is too great person to person. How do I know that? I worked on the impedance device as a grad student, so I know it well.

If you really want to track how you’re doing related to fatness, use the Body Mass Index. Every health insurance company uses that as a metric to assess your fatness.

“But I have bigger bones!” you say. Or maybe the weight recommended for you seems too high. In fact you may have a larger or smaller frame than average, and I explain how to know for sure with an easy measurement in the Health Info section titled Body Mass Index. Check it out today for an in-depth look at BMI.

What are you prepared to do today?

        Dr. Chet