Some light has been shed on a mystery that's occupied Egyptologists since the opening of King Tutenkamen's tomb by British archaeologist Howard Carter in 1922. Tutenkamen assumed the throne at eight, only to die at 19, many theorized at the hands of a murderer. But new DNA testing shows a youth who suffered from extremely weak bones, as well as maladies associated with incest. The actual cause of his death might have been from the effects of malaria on his weakened immune system.