Earlier quoted context omitted.
Aside from DUI risk and passive smoking, most of these risks are specific to the person. I can't catch obesity from being in the same room as a obese person, and while public health costs go up from drinkers/smokers/heavy people, I haven't heard of ambulances being gridlocked outside a hospital due to a spike of lifestyle diseases.
> Aside from DUI risk and passive smoking, most of these risks are specific to the person. I can't catch obesity from being in the same room as... That's not entirely accurate. Human behavior is effectively viral (per any of the Jonah Berger books among others). What we see becomes the norm, a behavioral norm. Smoking has decreased because it has become "less fashionable." And so on. So while you might not catch obes…
For fitness I do want to be fair and point out general health and muscle building are parts of that health industry