This is nothing new. By now, everyone knows there's bad stuff in almost everything we eat. But the thing is, these foods taste so good, people choose not to care (like me, for instance).

The only way you could be as healthy as you are looking to be, is to switch to a raw food diet. If you are interested in such a thing, I recommend the book Eating for Beauty by David Wolfe (Avacado). It's a very interesting and thorough book.