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Poctah t1_j1mn0td wrote

Reply to comment by thirdculture_hog in Childhood body mass index is unlikely to have a big impact on children's mood or behavioural disorders by giuliomagnifico

Depends on the person. My daughter is 7 and she is 49 inches tall and 65lbs She is considered overweight by bmi standards but she does competitive gymnastics and competitive tumbling/trampoline never stops moving(she’s at the gym 12 hours a week and spends at least 6 hours a week at home practicing on her own) so she has a ton of muscle mass and 0 fat on her body. So for her bmi is bs. With that said you are right that with most kids/adults it can be helpfully but there is outliers like athletes that it doesn’t work for.

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weazelhall t1_j1mokt6 wrote

Your daughter sounds like a very focused athlete, but that's not the norm. Most children before 12 aren't working out so muscle to fat ratios tend to be a little more similar when they also have the same bmi numbers.

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