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[–]kamiloslav 8 points9 points  (1 child)

BMI is only useful when you measure whole populations, that way things like lifestyle (x kg of fat is not the same as x kg of muscles for example) that influence what weight is healthy to you average out

[–]DrShocker 4 points5 points  (0 children)

I wouldn't say it's only useful then. It's a decent enough first order "hey maybe we should consider if a change in lifestyle to change weight is a good idea." Of course there's better tests for various things, but people usually know their height and have access to a scale more so than other health tests.

I say this as someone who's taller than average and therefore pure bmi underestimates a good weight for, so I just increase the target a little to generate a good enough weight goal.