You might check out the NetFlix movie Pururambo. There are also youtube videos like this one: http://www.youtube.com/watch?v=5aV_850nzv4 which I have not actually watched. (Unfortunately the youtube version of Pururambo is in a language that I do not speak.)
My point: My point is that modern people have gone way too far with the modernization garbage and have lost touch with their ancient roots, especially in diet. This is not a good reason to swing to the opposite extreme and embrace all things from the paleolithic era without some discriminative thinking. The folks in the NetFlix movie Pururambo lived a most miserable and narrow and short and brutish existence. I won't be running around stark naked in a malarial infested swamp anytime soon, at least not voluntarily.
And before you jump all over me, notice that the women in the NetFlix Pururambo are treated like shit.
There are many wonderful things about our society. Our music peaked in the late 1700's, well after the paleolithic era. Our technology is astonishing and getting better. Our race relations are doing good and getting better. Despite all the headlines, war is becoming a thing of the past; even the US Navy is trying to promote security by way of openness. Our population will plateau at 10 billion, which, given time, we can adjust to. LENR will put an end to our energy problems. The world is becoming a better place, even if Americans have the worse diet in the history of the world.