Julian McMahon’s cause of death has been ruled as natural and that he “died from lung metastatis as a result of head and neck metastatic cancer.” This means that the cancer first formed in the head and neck and then spread to the lung.

He played a half-human, half-demon in the WB supernatural series “Charmed” and a playboy plastic surgeon in the FX series “Nip/Tuck.”

Julian McMahon, the actor best known for starring in the medical drama Nip/Tuck and portraying Doctor Doom in the Fantastic Four films, has died at the age of 56.