Cannibal (Fallout 3)

Cannibal is a perk

Effects
The perk has one rank and requires the Lone Wanderer to be level 12 or above. It allows them to feed on the corpses of both humans and non-feral ghouls.

Each corpse feasted on restores 25 HP, adds three rads and reduces Karma by one point. If the act is witnessed by friendly non-player characters, they will turn hostile, as cannibalism is considered a crime against nature. However, companions do not turn hostile.