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The Guardian - US
The Guardian - US
World
Carey Gillam

Revealed: The secret push to bury a weedkiller’s link to Parkinson’s disease

Syngenta Disease United States Monsanto
A tractor sprays chemicals on a field.
A tractor sprays chemicals on a field. Photograph: Leonid Eremeychuk/Getty Images/iStockphoto

The global chemical giant Syngenta has sought to secretly influence scientific research regarding links between its top-selling weedkiller and Parkinson’s, internal corporate documents show.

While numerous independent researchers have determined that the weedkiller, paraquat, can cause neurological changes that are hallmarks of Parkinson’s, Syngenta has always maintained that the evidence linking paraquat to Parkinson’s disease is “fragmentary” and “inconclusive”.

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The Guardian - UK
The Guardian - UK
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