Health Podcast Library
Why Should I Trust You?
Season 2Episode 29

Is Parkinson’s A Preventable Disease? A Conversation w Dr. Ray Dorsey & Steve Brandenburg On Paraquat & Parkinson’s

May 28, 2026
57:53
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Episode Description

Parkinson’s Disease is rising worldwide. It is the fastest-growing neurological disease in the world and is being called a “slow-motion epidemic.” And there is no cure. 

So what’s driving the increase? There are several culprits, including a body of research associating exposure to the farm herbicide Paraquat. Paraquat is banned in 70 countries. At the same time, in America, the EPA and other major reviews say the evidence still falls short of proving a direct causal link.

We speak with one of the nation’s leading Parkinson’s researchers, Dr. Ray Dorsey, along with a man living with Parkinson’s after decades during which he says he was exposed to Paraquat.

But this story goes beyond one chemical or one disease. It’s about how we should make decisions regarding health amidst conflicting perspectives over science, data, warning signs, and painful lived experiences.


Hosts:

Brinda Adhikari

Tom Johnson

Maggie Bartlett

Dr. Mark Abdelmalek


Guests:

Steve Brandenburg, worked for 30 years as a producer on a video team in the agricultural industry. He has since been diagnosed with Parkinson’s disease. He  hosts a podcast called “The Secret Life of Parkinson’s".

Dr. Ray Dorsey, neurologist and one of the country's leading researchers on Parkinson's disease. He is the Director of the Center for the Brain and Environment with Atria Health and Research Institute.

Research on Paraquat and Parkinson's


https://pubmed.ncbi.nlm.nih.gov/21269927/


https://www.nejm.org/doi/full/10.1056/NEJMra2401857?utm_source=openevidence


https://www.uclahealth.org/news/article/paraquat-pesticide-parkinsons-disease#:~:text=A%20common%20pesticide%20called%20paraquat,can%20cause%20the%20movement%20disorder


https://pmc.ncbi.nlm.nih.gov/articles/PMC11491592/


https://www.sciencedirect.com/science/article/abs/pii/S147444222500287X


EPA on Paraquat and Parkinson's



https://www.epa.gov/ingredients-used-pesticide-products/paraquat-dichloride

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