It's no secret that "Back to the Future" star Michael J. Fox has dealt with serious health issues for the vast majority of his adult life. Fox was diagnosed with Parkinson's disease in 1991, when he was 29 years old. This health struggle flew under the radar until he went public with his diagnosis seven years later, subsequently becoming an outspoken advocate for Parkinson's research, founding the Michael J. Fox Foundation at the turn of the millennium. But while Fox was able to channel his disease into something positive, the journey hasn't always been easy, as it's cost him quite a bit. For example, Parkinson's led Fox to retire from acting full-time on two separate occasions . In an October 2025 interview with The Times , Fox revealed that it also forced him to give up his favori

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