[misja111]

Data does back up this assertion: https://news.ycombinator.com/item?id=43933580

The correlation seems to point to usage ground water that is contaminated with pesticides. So people living close to the golf courses have higher Parkinson risk. Probably golfers and employees less so.

[DudeOpotomus]

There is no causation. Your bias is showing.

What else uses massive amounts of pesticides and herbicides and is consumed by people every day?