Internal corporate documents reveal that chemical giant Syngenta may have attempted to influence scientific research regarding the links between its top-selling paraquat weedkiller and Parkinson’s disease. Independent researchers have stated that paraquat can cause neurological changes that are hallmarks of Parkinson’s, but Syngenta has maintained that the evidence linking the herbicide to Parkinson’s is “inconclusive”. The documents suggest that the scientific record referred to by the company in support of paraquat’s safety has been manipulated. Tactics used include enlisting researchers to author papers that failed to disclose their links to Syngenta, and engaging lawyers to edit scientific reports.
https://www.theguardian.com/us-news/2023/jun/02/paraquat-parkinsons-disease-research-syngenta-weedkiller