66
/ 100
Mostly True
United States
The website reports that a UCLA Health study links long-term exposure to the pesticide chlorpyrifos with a significantly increased risk of Parkinson's disease, showing a more than 2.5-fold higher likelihood of developing the disorder. The study combines human data and lab experiments, highlighting chlorpyrifos' harmful effects on dopamine neurons and the brain's protein-cleanup system.
Infact verdict: Mostly True (66/100).
The claims regarding chlorpyrifos and its association with Parkinson's disease are supported by multiple sources, including a UCLA Health study and various web articles. These sources consistently report that long-term exposure to chlorpyrifos significantly increases the risk of developing Parkinson's disease, with a more than 2.5-fold increase in risk. Additionally, chlorpyrifos is shown to harm dopamine neurons and disrupt the brain's protein-cleanup system, contributing to neurodegenerative diseases. Despite regulatory efforts, chlorpyrifos continues to be used on various crops in the US. The evidence is robust, leading to a high confidence in the factual accuracy of these claims.
March 17, 2026
Language: en
5 claims analyzed
How is this score determined? →
Multiple sources, including a UCLA Health study, link long-term exposure to chlorpyrifos with a significantly increased risk of Parkinson's disease. The evidence suggests a more than 2.5-fold increase in risk, corroborated by several web sources.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
90
Web Consensus Weight
50
Source Quality Score
80
Source Quality Weight
25
Llm Reasoning Score
80
Llm Reasoning Weight
25
Weighted Total
85
Evidence Summary
3 web sources corroborate the claim, including a UCLA Health study.
The claim is supported by multiple sources, including a UCLA Health study, which found that people with sustained exposure to chlorpyrifos have more than 2.5 times the risk of developing Parkinson's disease. This is corroborated by several web sources.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
90
Web Consensus Weight
50
Source Quality Score
80
Source Quality Weight
25
Llm Reasoning Score
80
Llm Reasoning Weight
25
Weighted Total
85
Evidence Summary
3 web sources corroborate the statistical claim, including a UCLA Health study.
The claim is supported by multiple studies indicating that chlorpyrifos harms dopamine neurons and disrupts the brain's protein-cleanup system, contributing to neurodegenerative diseases like Parkinson's. This is corroborated by several web sources.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
90
Web Consensus Weight
50
Source Quality Score
80
Source Quality Weight
25
Llm Reasoning Score
80
Llm Reasoning Weight
25
Weighted Total
85
Evidence Summary
3 web sources corroborate the claim, including scientific studies.
Chlorpyrifos is still used on various crops in the US despite regulatory efforts to limit its use. This is supported by multiple sources, including EPA updates and environmental advocacy groups.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
70
Web Consensus Weight
50
Source Quality Score
60
Source Quality Weight
25
Llm Reasoning Score
60
Llm Reasoning Weight
25
Weighted Total
65
Evidence Summary
3 web sources confirm ongoing use of chlorpyrifos on crops.