"Parasites can live only inside another animal and, as Kathleen McAuliffe reveals, these tiny organisms have many evolutionary motives for manipulating the behavior of their hosts. With astonishing precision, parasites can coax rats to approach cats, spiders to transform the patterns of their webs, and fish to draw the attention of birds that then swoop down to feast on them. We humans are hardly immune to their influence. Organisms we pick up from our own pets are strongly suspected of changing our personality traits and contributing to recklessness and impulsivity—even suicide. Germs that cause colds and the flu may alter our behavior even before symptoms become apparent."
So far the human race has not addressed the peculiar nature of pedophilia - that the victims often turn to the same crime. This may well be based on a parasitic entity needing to propagate.
I have seen a related phenomenon in a case of possession. The woman (a smoker) would steal money to buy cigarettes for other people and she complained that within 5 minutes she would forget that she had stolen. As far as I could see the nicotine was used to make it easier for the entity to capture other humans.
So there the human's behavior was being modified (and memory edited) to increase the capture rate of the possessing entity.
