Like 19th century European ruling families, incest was extremely common among the royalty of Egypt. Researchers at the Institute for Mummies and Icemen tested Tut's mitochondrial DNA, determining that his mom was the sister of the previous pharaoh, Tutankhamun’s father. Yes, his mother was his father's sister.
Just after ascending the throne, Tut married his half-sister, Ankhesenamun. They shared the same dad. Her mother was likely the famous queen Nefertiti, who also might've been Tut’s mother. Essentially, Tut’s wife was certainly his half-sister, possibly his blood sister, and maybe even his step-mother.
Because of the incest that protected the bloodline of the Egyptian royal family, Tut had a number of prominent physical disfigurements. Unlike the virile young man familiar from his golden death mask, Tut probably had a severe overbite, a curved spine, a disfigured foot, a skewed face, and epilepsy.
Contrary to popular belief, Tut almost certainly did not die in a chariot accident. Then what did kill King Tutankhamun? Scientists have a pretty strong idea how Tut kicked the bucket. Warning: It's pretty sad.