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BMI is accepted as a poor indicator of health or fitness. It's common for objectively healthy people, such as muscular athletes, to have a high BMI. https://w

• recursive 4y ago
  That's all true. But none of that stops it from being significantly positively correlated with incidence of cancer.
  • rob137 4y ago
    What about when you control for bodyfat percentage? Genuinely curious. I've heard that waist circumference is associated with lots of negative outcomes even when you control for physical fitness, but I don't actually know this is true.
• missedthecue 4y ago
  A lot of body builders (even clean ones) are not healthy at all. 270 pounds is 270 pounds, whether it's fat or muscle. And 270 pounds of muscle is harder on the heart. Many professional athletes shrink down to a healthy size after retirement because being so big is just bad for you.
• ishjoh 4y ago
  I agree, it doesn't work for extremely muscular athletes but for the vast majority of people it works very well because the number of extremely muscular athletes in any country is small. So in this case it still serves its purpose very well.