The discussions about grains have been really interesting here. I'm going to have to cast my vote on the grains = good side, if we're talking whole grains. Personally, if I had to guess, I'd say modern health problems have more to do with processed sugar, vegetable oil, processed foods, and junk food in general than with any of the major food groups. We don't eat too much meat, grains, dairy, fruits, vegetables, etc. We eat too many chips and twinkies. A good rule of thumb is if God made it (fruits, vegetables, whole grains, meat, beans, dairy, etc.) it's probably good for you in reasonable amounts. The more man has fooled around with it, the worse. An exception would be man cooking our meat instead of eating it raw, but even that was commanded by God from the time we started eating animals (after the Flood).