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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“A helmet’s weight is at the core of Simpson’s research. Simple physics says the head moves when the body is struck, and the heavier the head, the more it travels. The brain is the passenger.”