A protein variant can provide protection from deadly brain-wasting

Evolution found cure for prion disease spread by cannibalism

prions and disease

BRAIN DRAIN  Prion diseases, such as kuru and mad cow disease, result when a normal brain protein (lower left) morphs into a disease-causing form and converts its normal counterparts. The twisted proteins form clumps (upper center) or strands that cluster in large plaques (lower right) that kill brain cells. 

Nicolle Rager Fuller

Ending cannibalism stopped a deadly brain-wasting disease called kuru.