Governor Phil Scott signed landmark legislation into law on Tuesday, making Vermont the first state in the nation to ban the toxic herbicide paraquat, which is linked to Parkinson’s disease. Health and environmental advocates celebrated the victory.

Large-scale epidemiological studies have shown that individuals exposed to paraquat have a roughly 250% higher risk of developing Parkinson’s disease. The risk is not limited to those who apply the pesticide directly. Because of the potential for drift, paraquat exposure is also a concern for people who live, work, or attend school nearby.  

″There are some agricultural pesticides that are just too poisonous to be used safely. Paraquat is now at the top of that list and therefore banning it in Vermont is absolutely the right thing to do,″ said Paul Burns, executive director of the Vermont Public Interest Research Group.   

Unlike many herbicides that pose chronic risks over decades, paraquat is also acutely toxic. A single accidental sip can be fatal, and there is no known antidote. In Vermont, where small family farms and residential areas often intermingle, the risk of accidental ingestion or severe skin exposure remains a constant liability. 

The danger presented by paraquat is so great that more than 70 countries around the world have already banned its use. Syngenta, which has been the primary manufacturer of paraquat, is headquartered in Switzerland and produces much of its supply in the United Kingdom – yet both Switzerland and the UK have banned the use of paraquat on their own soil to protect their citizens. 

Only about 15% of people with Parkinson’s disease have a family history of the condition, meaning most cases are influenced by environmental factors — including exposure to paraquat. In testimony at the State House this year, Dr. James Boyd, a neurologist with UVM Medical Center, underscored that chronic exposure to paraquat can significantly increase a person’s risk of developing Parkinson’s disease.Source: Vermont Public Interest Research Group