Star of the iconic 'Back to the Future' movies, Hollywood star Michael J Fox spoke about how Parkinson’s disease has impacted his acting career in in November 2020. The neurodegenerative disorder can cause severe cognitive issues, and the 61-year-old actor detailed how his struggles with the condition have affected his career. In his memoir, Fox wrote that “not being able to speak reliably is a game-breaker for an actor,” the Times reported. He said, “Absent a chemical intervention, Parkinson’s will render me frozen, immobile, stone-faced, and mute — entirely at the mercy of my environment. For someone for whom motion equals emotion, vibrance and relevance, it’s a lesson in humility.”