The Skeezyks doesn't know a lot about this.

My father had Parkinson's. So far, at least, I don't have it & I'm gettin' up there in age. I've read that Parkinson's is not inherited except in a few instances. My family-of-origin is all gone now. So there's no one to ask about anything. If such conditions as long-term depression & anxiety can lead to Alzheimer's & Parkinson's, then I would guess I'm overdue.
I recall reading somewhere that one circumstance, that has been found to contribute to the development of Parkinson's, is repeated exposure to insecticides. This was interesting to me because when I was going into 7th grade my parents moved us out into the country to an area where there were tons of mosquitos. My father had a lawn & garden tractor (International Harvester)

that had a fogger attachment. I can still see him riding around on that tractor fogging the yard so that we could all sit outside during the long summer evenings...