However, it strikes me as a particular dual standard that some jurisdictions have tackled models whose body fat percentage is dangerously low, but who do not have steroid-built, unhealthily large muscles with it that their body fat can't healthily support, but seem to be completely fine with adding said unhealthy muscles, to the former.
It comes as no surprise to me that such jurisdictions elect to primarily use the very unreliable and pseudoscientific body mass index in lieu of the more reliable body fat percentage as an indicator of “underweight”, for had they elected to use the latter: it would accurately show that most body builders are unhealthy low in fat, and would be struck down under the same rules.
But of course, that is not what they desire, for that falls under what they consider to be their conventional ideal of beauty, and “health concerns" have always been one of the first thing the authoritarian reaches for, to enforce his own will and social control over others.
We ban drugs, for they are unhealthy! but alcohol? well I don't know about that... they are socially acceptable, after all.