Aside from the fact that cannibalism is generally treated as morally and ethically wrong, it can also cause some serious health issues. Firstly, humans would be considered a fatty red meat, which is not ideal for maintaining a healthy diet. The human can provide approximately 81,000 calories but half of that is from the fat. Nutritional content aside, malaria parasites have been proven to spread between mice because of cannibalism and blood drinking, as does hepatitis between apes. Also, cannibalising brains opens the eater to additional diseases, including kuru and Creutzfeldt-Jakob, also known as Mad Cow Disease. Kuru is a creepy disease studied in the Fore tribe of Papua New Guinea who once practiced cannibalism following the death of a loved one. Its a neurodegenerative disease that eats your brain until it looks like Swiss cheese. Mad Cow also eats your brain causing motor deficiency, language issues (explains the groaning) and shakes. Both of these diseases also cause death. If destruction of the brain is the only way to kill a zombie, then these diseases should take care of it for us.