I've read quite a bit on this topic, but I love the way this one makes it a letter to us from the Food Industry. It seems we're coming into the light despite the industry's attempts to keep us in the dark.
This one is worth your time:
http://blogs.scientificamerican.com/guest-blog/2013/05/19/dear-american-consumers-please-dont-start-eating-healthfully-sincerely-the-food-industry/