Use of herbicide linked to Parkinson's is on the rise in the US
Summary
Environmental reporter Delaney Nolan discusses a Mississippi plant leaking massive amounts of the toxic herbicide paraquat into the air, coinciding with high local Parkinson’s rates. Epidemiologist Dr. Beata Ritz explains the biological link between paraquat and Parkinson’s, noting that inhalation allows the toxin to bypass the blood-brain barrier. The episode highlights the chemical’s ban in over 70 countries and Vermont’s move to become the first U.S. state to prohibit it.
Topics discussed
Sponsors: MathWorks and Progressive Insurance
Introduction to paraquat and the Mississippi plant
The Waynesboro facility and paraquat repackaging
Massive fugitive emissions reported by the plant
Legality of emissions and regulatory gaps
Elevated Parkinson's rates in Wayne County
Biological link between paraquat and Parkinson's
Oxidative stress and cellular damage mechanisms
Definitive study on exposure and risk doubling
Inhalation risks and the olfactory pathway to the brain
Vermont's ban and call for US regulation
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