Hundreds of US farm workers are currently pursuing a legal case against the manufacturer of paraquat alleging the manufacture knew the risks and failed to warn consumers. The manufacture says claims of a link between Paraquat and Parkinson's are not supported by scientific evidence. Although many epidemiological studies have looked for a link between the risk for developing Parkinson's disease among workers exposed to paraquat, few have looked at the age at onset.
Julie Plumley's father John was diagnosed with Parkinson's in his 40s. His neighbour Ken Barnes was diagnosed around the same time - he was also in his 40s and had also been using Paraquat for years. Ratner et al., 2014 and Gamache et al., 2019 also observed that exposure to pesticides including paraquat is associated with a younger age at onset of Parkinson's disease.
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