Using data from a large online survey sponsored by the Michael J. Fox Foundation for Parkinson’s Research, researchers found that participants who had a history of playing organized tackle football were 61% more likely to report a Parkinson’s disease diagnosis or parkinsonism, an umbrella term for symptoms like tremors and rigidity that cause movement problems, compared with those who played other organized sports.

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    21 year ago

    There’s some genetic aspect but it doesn’t seem to run in families like a real genetic disease, so it’s probably a result of damage (physical trauma and/or toxins) and the genetic component is just a predisposition.