Bodybuilders often have BMIs that wrongly predict their health outcomes. They know this, though, and it's pretty obvious that they're not actually overweight. T

Bodybuilders often have BMIs that wrongly predict their health outcomes. They know this, though, and it's pretty obvious that they're not actually overweight. The problem is the average person, because BMI will list them as incorrectly healthy. If you're a "normal" weight, but 25% bodyfat, you're not in good shape. But you may think "oh, I'm okay" rather than "I really need to adjust". It seems obvious to me that BMI will tend to error by understating the problem. That means that if average BMI is increasing, the problem is getting worse much more rapidly than you might think.