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UCLA Study Links Chlorpyrifos to Increased Parkinson's Risk

3/24/2026

25 6 Full Breakdown

Summary

Story summary

University of California, Los Angeles (UCLA) researchers link long-term chlorpyrifos exposure to a 2.5-fold Parkinson's risk, based on 829 patients and 824 controls over 45 years.
The study was published in Springer Nature Link.
Animal experiments showed similar results with mice and zebrafish exhibiting movement issues and brain damage.
The study is observational and cannot establish causation.

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Story summary

University of California, Los Angeles (UCLA) researchers link long-term chlorpyrifos exposure to a 2.5-fold Parkinson's risk, based on 829 patients and 824 controls over 45 years.
The study was published in Springer Nature Link.
Animal experiments showed similar results with mice and zebrafish exhibiting movement issues and brain damage.
The study is observational and cannot establish causation.