A lot of this is stuff my mother taught me, but I've verified most of it online:
Don't bathe in hot water. It contans more harmful chemicals because chemical reactions speed up in hot water.
Drink from glass bottles, because plastic bottles shed plastic particles into the liquid.
Only eat wild salmon, avoid farm-raised.
Keep nuts and olive oil refrigerated because they can go rancid.
Eat old fashioned oatmeal instead of quick/instant oatmeal because it's far more nutritious and less processed.
Don't have too much Vitamin E in supplement form because it's toxic in large quantitites. Also avoid Vitamin E a few weeks before having surgery because it's a blood thinner.
If you're female and lactose-intolerant avoid yogurt because it has been linked with breast cancer in such women.
Unsweetened (or very lightly sweetened) dark chocolate is good for you.
So is cinnamon.
Too much protein is bad for you. Eat just enough, and try to get it from non-animal sources like beans and nuts.
It is important to buy thin-skinned fruit organic because they absorb more pesticides than thick-skinned fruits like oranges and bananas. By the way a friend of mine who went to South America said they would wrap bananas hanging from trees in bags filled with pesticides. I thought that was disturbing.
Here's a picture:
wikipedia.org
Bananas and watermellons raise the blood sugar more than other fruits.
Dying your hair regularly increases the risk of certain cancers. Dark hair dye is most harmful. Hair dye is not really regulated by the FDA, so you have to be careful. Neither are over-the-counter beauty products.
Though to his credit he did discover rats swimming in a vat of sauce once (or so he claims). 
