[HIGHLIGHTS] Michael J. Fox says his Parkinson's is "getting harder" and he can't imagine "living like this until I'm 80"

Actor Michael J. Fox said that living with Parkinson's is becoming "increasingly hard" The 61-year-old said that he does not imagine living with the disease until he is 80 years old.

Fox was diagnosed in 1991, when he was only 29 years old and was one of the biggest stars of Hollywood. His foundation, MichaelJ. Fox, has raised $1.500 billion for research into Parkinson's since 2000. The foundation announced this month that it had discovered a marker inside the body that could help detect the presence of Parkinson's.