There was an article on food, health, and diet in Sunday's NYTimes magazine. Normally don't pay too much attention to these articles (I figured good/clean living I learned in Kansas was good enough), but this one has a lot of food for thought in it. Worth reading I think.
Tom
http://www.nytimes.com/2007/01/28/magazine/28nutritionism.t.html?_r=1&ref=magazine&oref=slogin