'M*A*S*H' Star Alan Alda Reveals Parkinson's Diagnosis

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M*A*S*H star Alan Alda is living with Parkinson's disease.

The 82-year-old actor said on Tuesday's episode of CBS This Morning that he's had a "full life" since being diagnosed with the progressive nervous system disorder more than three years ago.

"I'm doing great," he said. "I was diagnosed three and a half years ago. I've had a full life since then. I've acted, I've given talks, I help at the Alda Center for Communicating Science at Stony Brook, I started this new podcast."

Alda said he decided to go public after he displayed some symptoms while promoting his podcast, Clear + Vivid, this month.

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"I noticed that -- I had been on television a lot in the last couple of weeks talking about the new podcast -- and I could see my thumb twitch in some shots and I thought, it's probably only a matter of time before somebody does a story about this from a sad point of view, but that's not where I am," he explained.

Alda confirmed his diagnosis in a tweet Tuesday morning.

"I decided to let people know I have Parkinson's to encourage others to take action. I was Diagnosed 3 and a half years ago, but my life is full. I act, I give talks, I do my podcast, which I love. If you get a diagnosis, keep moving!" he wrote.

Alda is known for playing Hawkeye Pierce on M*A*S*H, and has since appeared on The West Wing, 30 Rock and The Blacklist. He was also nominated for an Oscar for his portrayal of Senator Ralph Owen Brewster in The Aviator.

By Annie Martin

Originally published in UPI Entertainment News.

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