Sociopathy is more likely related to mate competition than cannibalism, which is almost never practised for food, but rather for its ritual significance. Cannib

Sociopathy is more likely related to mate competition than cannibalism, which is almost never practised for food, but rather for its ritual significance. Cannibalism was fairly widely and routinely practised in pre-political states--to the extent that in Polynesia there is a prion disease that appears to have evolved with cannibalism as a vector--but even amongst peoples where it was practised, in times of starvation people would mostly starve rather than eat each other. A number of early European explorers (including Champlain, if memory serves) describe ritual cannibalism--generally the consumption of prisoners, who were first tortured to death in that holistic and natural way First Peoples had--but also describe people starving to death in times of want without resorting to it. In the case of this woman, her amygdalae have been damaged by Urbach-Wieth disease, which according to the article is extremely rare. That said, it is likely that there is a wide distribution of various types of emotional response in the populace due to variations in neurological capability.