You might be interested to pick up the book Paleofantasy: What Evolution Really Tells Us about Sex, Diet, and How we Live by Marlene Zuk. If that’s a bit much for you, perhaps you can find the April 2013 issue of the Nutrition Action health letter put out by the Center for Science in the Public Interest. (The April issue was not yet in their archives as of this writing but I expect will be there by June 2013.)
Marlene Zuk gives a great interview in this issue of Nutrition Action on the topic of the Paleo diet. For those not in the know, the Paleo diet essentially tries to mimic what our ancestors ate based on the premise that it was the invention of agriculture about 10,000 years ago and subsequent changes in diet that causes many modern health issues like diabetes, cancer, MS, and obesity.