I suppose when all is said and done, we do technically have a choice in the substances we take into our bodies - but we don't really have a choice on breathing. I refuse to worry too much about something I can't really change. I'm intending to do as Fran says, live life, enjoy it and to the full.
For example, I I choose not to smoke and I can choose to stand with smokers and chat, or not.
I choose to wear perfume, but I don't wear it every day, so I can't understand why that should be so harmful. I don't wear cheap perfume, or over-use it - it's bad enough to walk around in someone else's cloud, let alone my own!
I choose to go and take sun, not very often and I'm careful to wear suncream when I'm out in the summertime or on vacation.
I also choose the foods that I eat - mostly organic, but I doubt even "organic" foods are as organic as people like to believe.
So after all, if I get sick, then it's just a part of life - if it's down to my own choices, so be it.
I think there's a lot to be said for the men in white coats, but why alarm people so much over things that aren't going to change any time soon? If we all took into account ALL of their findings all at once, people wouldn't eat, or sleep, or wash, or even breathe....