[perl4ever]

I think there is a general principle, that if a certain number of people have a condition, possibly rare, that severely affects them, then there are almost certainly going to be a lot more with milder versions that may go unnoticed, by the public, or by the health system, or statisticians, or whatever.

I think your unstated assumption is that the level of the condition that causes health problems and/or a diagnosis is the same level that would mess with breathalyzers. It could be much less.