I agree with Veronica. It's all about choices. Personally, I don't care what the caveman ate. It may sound simplistic, but I have experimented with many ways of eating over the years. And as Catrin said, it's all about results. I stopped eating junk food and processed stuff when I was 25 andf pretty much weigh the same as I did in high school at almost age 60. Other than that, first I ate mostly complex carbs and little meat. I was a vegetarian for awhile. I tried Paleo. It was hard for me, and I didn't feel any different. None of my health issues have changed, except when I cut down on my meat intake, my cholesterol goes down. Of course, I don't have high blood pressure or diabetes, so who knows. I find a Mediterranean type diet works best for me. I don't totally exclude meat, but in the past 4 months, since I stopped the Paleo, my weight has stabilized at a lower number and I don't feel deprived if I eat a piece of spelt bread or have some brown rice. I eat at least 2 meatless dinners a week and have red meat no more than 1x a week. I do eat plenty of chicken and fish.