There already is a Parkinson's treatment: nicotine. Seriously.
Also, there's some evidence that eating a lot of sugar may be tied to Parkinson's:
https://www.karger.com/Article/Abstract/520594
https://www.sciencedirect.com/science/article/pii/S2213453019300230
Nicotine also kills covid. That didn't stop then from making billions while giving everyone parkinsons
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