Paraquat — used extensively in marijuana-eradication efforts sponsored in South America by our government — is now tied to PD. Apparently the molecular structure of this substance is similar to that of MPTP, the synthetic opiate that caused catastrophic Parkinsonism in the unlucky grad students who cooked it up.
Should we then be seeing an epidemic of cases among people who smoked pot in the 1970s and 80s? I’m still waiting for the epidemic of PD among cocaine abusers of that era. My prediction is that herbicides and pesticides will be among the environmental factors that can lead to PD.
I think PD is an inflammatory response to a virus or some other unrecognized pathogen. No evidence, just a hunch, based on recent reports of a viral vector for chronic fatigue syndrome and, possibly, Alzheimer’s