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.

Julian McMahon's cause of death has been revealed, a little over a week after the much-loved 'Fantastic Four' actor died aged 56.

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