And stay away? Ghouls are a production prolonged radiation exposure, at least in newer titles. And ferals are ghouls gone mad due to brain necrosis or something like that which also due to even more radiation exposure. So that's raise a question, shouldn't ghouls be still affected and also stay away from radioactive shitholes like Gecko to avoid getting brain fever or lose a dick or get critical forms of radiation sickness? Or some just got unlucky and mutation is random rather than constant long process of the whole body reformation?