That's what happens when your adrenochrome supply runs out. Your body can't produce the proteins that hold you together and you literally decay.

Kuru develops later for those who have consumed human flesh or blood, the prions end up killing cannibals (usually due tainted flesh or abnormalities).

Nature has a built in way of protecting itself from abhorrent behavior.

You don't eat your young, that's a golden rule in nature -- it defies the nature of procreation.

These people are evil, and sick.