It's very important to be aware of what you eat. Every year we "vote" with our food dollars for the kind of food we want in the future. Make sure you're not voting for high fructose cardboard. Here are two books that may help.
Here's a letter to the editor I wrote that gives one of the many reasons for eating locally. http://www.kjonline.com/opinion/letters/Local-farmers-provide-alternatives-to-antibiotics.html