The true cause of death of the famous Australian actor Julian McMahon, Dr. Doom in Marvel and Fox's 'Fantastic 4', has come to light.

The cause of death for "Nip/Tuck" and "Fantastic Four" star actor Julian McMahon has been revealed after he died July 2 at age 56.

Julian McMahon, star of Charmed and Nip/Tuck, has died aged 56 following a private cancer battle. Read about his cause of death, family tributes, and his touching last message to daughter Madison.