Yet these same fashionable folks think nothing of peeing in doorways, chain-smoking really awful cigarettes, hawking loogies at will, and staggering drunkenly about. We are pressured to be neurotic about what we eat and drink, as though a healthy life is all in diet. Sure, you go live with a bean-eater. I'd rather breathe, thank you. No, I believe a much more important factor is stress.
Stress comes from many sources.
If you live in the city, noise is a big one. And bad air, and weirdos, and crowds. And then you get to work, and you are trapped all day with people you would vote to cast from the proverbial lifeboat. And your boss is the original Bonehead From Space, and you are doing the work of two because of cutbacks, but getting the pay of one. And you are stuck on a team project with the Anal Dingbats From Hell, who worship Rube Goldberg and will invest endless energy in any project, as long as it has no practical value.