Paraquat: Herbicide under US scrutiny over potential Parkinson's link
It's a condition the 65-year-old farmer believes he wouldn't have if it weren't for paraquat, a herbicide he once relied on to control weeds in his vineyard in the midwestern US state of Ohio.
This undated photo courtesy of David Jilbert, a Parkinson's survivor, shows him spraying his Ohio vineyard with herbicides. (AFP)