Ryan Reynolds' father dies after battle with Parkinson's disease

Ryan Reynolds is mourning the loss of his father, James Reynolds.

The 39-year-old actor tweeted a throwback photo of his father holding him as a baby on Wednesday, writing, "RIP Pops. James C. Reynolds. 1941-2015 If possible, please donate/support: http://www.michaeljfox.org."

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Last November, Reynolds revealed his father's 20-year struggle with Parkinson's disease during an appearance on the Today show. "My father really hasn't ever said he has Parkinson's disease," Reynolds said. "He comes from a pretty prideful generation, and he doesn't really talk about it too much. But, he's maybe said it once or twice out loud."

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"I think one of the interesting things about having a family member who's diagnosed with this particular disease, who isn't really engaging in an active fight against it, it kind of galvanized everybody else to seek resources," he added. "And for [my family], in a strange way, it's really kind of brought us together."

Reynolds now sits on the Board of Directors at The Michael J. Fox Foundation for Parkinson's Research.

Last November, the Deadpool star also penned a touching story about growing up with his father and his three older brothers for Time. Reynolds described his father as "the toughest man alive: a former cop, former boxer and full-time landmine."

"He worked tirelessly to provide for his family and in return, you were expected to do what he said, often before he said it," he wrote. "In a word, he was scary. Not because he was sadistic or physically abusive. He was scary because he was one of those people with an energetic 'weight' to him."

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Reynolds is now a father himself to his daughter with Blake Lively, James Reynolds, who turns one in December.

"I've definitely lost all cool," he joked with Jimmy Fallon on The Tonight Show in September. "I'm the dad guy now."

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