I think it's hilarious that you won't use a cell phone close to your head but you'll inhale cigarette smoke once in awhile - bad bad bad;)
Anywho, a lot of our (both my husband & I are pretty much on the same page) are a mix of health reasons and environment reasons for why we choose to do these things:
1. we don't buy bottled water - this is both for environmental & health reasons. we use a filter and just filter tap water and pour into re-usable drink containers.
2. we are part of community supported agriculture for all of our vegetables, fruit & meat. Again, both health & environment and to support or local economy & farmers.
3. we compost & garden - health & environment
4. we don't use our cell phones in our cars at all - they've determined that driving while on the phone isn't as bad as drunk driving...it's something like 23 times WORSE than drunk driving. So, I'm going to say we do this for health reasons;)
5. I go in the sun sans sunscreen for about 10 minutes per day - just enough to get my vitamin D intake (they say that's about all you need) and then put on my sunscreen.
6. we don't buy or eat anything with high fructose corn syrup - one of the worst things you can put in your body. caveat: i'm not going to say we NEVER do this - every candy bar is made with it as are all the U.S. sodas. If we can't find Mexican coke (we live in So.Cal), then we may very very very occassionally have something with High Fruc Corn Syrup in it. Also note, that all of Europe has banned HFCS because it is so horribly bad for our bodies. We use it because it's way cheaper than sugar.
7. I try not to put plastic in the microwave, but I admit that when I do I sit there thinking how bad it is and how I shouldn't be doing it and I kinda beat myself up over it;) Then I enjoy my organic pasta & sauce - ha ha.
This list makes it sound like we're kinda nuts, but I swear, we're not freaks about it - everything in moderation. We have the knowledge so we try to apply it as best we can.