Glyphosate exposure jumped substantially in two decades in Californian community

tractor spraying glyphosate pesticides on a field

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Rising levels of herbicide linked to US introduction of GM crops in 1994

Human exposure to the controversial herbicide glyphosate, the key ingredient in Monsanto’s Roundup, has increased significantly in one Californian community since 1994, according to new analysis by a University of California San Diego (UCSD) team. The researchers link this rise to the introduction of genetically modified glyphosate-tolerant crops to the US that year. Agricultural application of Roundup to glyphosate-tolerant crops in the US such as soy and corn has jumped approximately 15-fold over this same time period.