Via: ABC Science
The modern genre of werewolf books, TV series and movies are in complete agreement with the 1941 Hollywood classic film The Wolf Man. Yep, if you are so inclined, the full Moon will turn you into a lunatic werewolf.
Indeed, that rather antiquated word ‘lunacy’ comes from Luna, who was the Roman Goddess of the Moon. One definition of lunacy is “intermittent insanity once believed to be related to phases of the moon”.
This belief goes back a long way. The Roman scientist and military commander, Pliny the Elder, said that because the full Moon causes a very heavy nocturnal dew, it must also make the brain become “unnaturally moist”. That was how, he claimed, the Moon caused both epilepsy and lunacy. He was wrong.