The average true supernatural Zombie will live up to 7 years if it feeds upon human flesh regularly. The paranormal zombie virus that intertwines with human DNA transmutes cells into living dead structures somewhat akin to cancer cells. The zombification virus digests consumed human flesh into metaphysical energy. This is the energy that feeds the virus thereby slowing down the rate of cellular necrosis. If the zombie ingests little or no human flesh then it will completely decay into a skeleton within 3 years or less depending on a variety of environmental factors. Once the brain has sufficiently decayed it will cease moving. Mystical intervention by a practitioner of magic can prolong a zombies life indefinitely. Such zombies act as mindless minions to wreak havoc on behalf of these nefarious witches, warlocks, wizards, dark priests, and sorcerers.