If you look a little closer you will also notice that the period that is used
for a baseline for the rate of change of the human gene map is exactly
the era of the beginning of agriculture - and the domestication of food
animals! For Western civilization it is also the mark of the decline of
the Paleolithic lifestyle. We know for sure that the Western diet kills
the Aleuts.
The Paleo type of diet looks better and better all the time.