King Tutankhamun, also known as King Tut, is believed to have died at the young age of 19. He became the pharaoh of Egypt at the age of nine, following the death of his father Akhenaten, and ruled for about 10 years before his sudden death. Tutankhamun's exact cause of death remains a mystery, but some experts believe that he may have suffered from a combination of several health problems, including a broken leg, malaria, and complications from a genetic bone disorder.