The thought of Human cannibalism blows my mind. I mean Why!
It's horrible how people can eat flesh and internal organs of other people.
I'd imagine out side if physo's in the 1st world. Much of the world has plants and animals they can eat instead. 
That's right but I wonder if it's true, maybe it's just another myth, like vampire folklore myth, there has been many like in Hebrew culture or ancient Greece.