I think everybody has parasites that cause people to want to eat ass, and its only gotten as common as it is now because it has spread so widely.

Humans are exposed to parasites all through their lives and there are no real efforts to get rid of them or study how they effect their hosts mental states, or what they find arousing. Theres an intestine to brain connection that everyone is ignoring.

it was proven that parasites like toxoplasmos cause hosts to drive more dangerously and even behave more promiscuously assumedly in an attempt to spread themselves to other people through blood or fluids.