In his new documentary, Still: A Michael J. Fox Movie, the Back to the Future star revealed he "drank to dissociate" from his new reality after being diagnosed with the neurodegenerative disorder in 1991. "I didn't know what was happening. I didn't know what was coming. So what if I could just have four glasses of wine and maybe a shot?" Fox recalled, according to USA Today. "I was definitely an alcoholic. But I've gone 30 years without having a drink." Fox recalled, according to USA Today.