While the bookshelves and video aisles are full of stories based on the mythology of vampires, comparatively little folklore exists with regard to zombies. Many zombie myths arose out African and Caribbean superstition, a fact not surprising when one considers the disproportionate number of zombies in the tropical regions of the world.
Zombies are reanimated corpses
Source: a zombie's lack of a heartbeat, along with observations of apparently dead zombie-bite victims reawakening as zombies.
Truth: despite appearances to the contrary, a person infected with the zombie virus never actually dies before awakening as a zombie. In addition, zombie circulation is taken up by the skeletal muscles, rendering the heart inert.
Zombies are immortal
Source: as with vampires, victims of zombie bites arise from comas, an event often misinterpreted as some sort of resurrection.
Fact: most zombies live less than a year.
Zombies are created by voodoo spells
Source: West African and Caribbean slave mythology, along with the large numbers of zombies in tropical areas.
Fact: zombies are created by the transmission of a virus. The voodoo type zombie is basicly a person that has been poisoned to the extent of brain damage and is still alive.
Zombies are brain eaters
Fact: well-fed zombies can afford to be discriminating. They will generally eat the more nutritious brains and bone marrow and leave the rest of the corpse untouched. However, a hungry zombie will leave only the bones.
Zombies can be created by exposure to toxic chemicals or radiation
Source: popularized by innumerable B movie plots.
Fact: repeat after me: zombies are created by the transmission of a virus