Massive spread of blond-haired, light-eyed individuals across Northern Europe; a possible explanation for this rapid spread is this: during that period, the extreme cold meant that populations in the coldest areas ate only meat. Unable to gather fruit and vegetables, males had to embark on often dangerous hunts, while females remained in the villages (in warmer areas, however, women might also be engaged in gathering various fruits and vegetables, also exposing themselves to mortal risks). Under these conditions of “unequal” mortality, male mortality was much higher in Europe, and for every man, there were significantly more women, who literally had to compete for the few available men. Evidently, these men preferred to impregnate women with light hair and eyes, favoring the transmission of the genes that cause this “anomaly.” Without such a selection process, rather than a few centuries, blonds would have needed 850,000 years to prevail over Moors in a given area.
