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Common Pesticide Linked to Higher Risk of Parkinson's Disease

Published on June 23, 2026, 6:35 p.m.
Common Pesticide Linked to Higher Risk of Parkinson's Disease

Topic: Health

A new study found that long-term exposure to a common pesticide called chlorpyrifos is linked to a higher risk of developing Parkinson's disease. People who lived in areas with ongoing exposure had more than a 2.5 times greater likelihood of getting the condition.

A team of researchers from UCLA Health studied the link between this pesticide and Parkinson's disease. They looked at data from over 1,700 people - some with the condition and others without. The scientists used records of pesticide use in California to estimate how much exposure each person had.

The results showed that people who lived in areas where chlorpyrifos was commonly used had a higher risk of developing Parkinson's disease. In fact, those with long-term residential exposure were more than 2.5 times more likely to get the condition compared to those with little or no exposure.

To understand how this pesticide might harm the brain, the researchers also conducted laboratory experiments. They exposed mice to chlorpyrifos and found that it caused movement problems and damaged dopamine-producing neurons - the same type of cells that are affected in Parkinson's disease.

The study also showed that chlorpyrifos disrupts a natural process called autophagy, which helps remove damaged proteins from brain cells. When this process is disrupted, brain cells can become damaged or die. This discovery could lead to new targets for future therapies aimed at protecting the brain from pesticide-related damage.

Parkinson's disease is a progressive neurological disorder that affects nearly one million people in the United States. While genetics plays a role in some cases, scientists now recognize environmental exposures like pesticides as important risk factors too.

Why It Matters

This study matters because it highlights the potential risks of pesticides on our health. As students in India, you may be concerned about the impact of pesticides on your environment and community. Understanding the links between pesticides and diseases can help inform policy decisions and protect public health.

Key Facts

  • The pesticide chlorpyrifos is linked to a higher risk of developing Parkinson's disease.
  • People with long-term residential exposure had more than a 2.5 times greater likelihood of getting the condition.
  • Chlorpyrifos disrupts autophagy, a natural process that helps remove damaged proteins from brain cells.
  • Parkinson's disease is a progressive neurological disorder that affects nearly one million people in the United States.
  • Environmental exposures like pesticides are recognized as important risk factors for Parkinson's disease.

Key Terms

Autophagy
A natural process that helps remove damaged proteins from brain cells.

Implications

This study matters because it highlights the potential risks of pesticides on our health. As students in India, you may be concerned about the impact of pesticides on your environment and community. Understanding the links between pesticides and diseases can help inform policy decisions and protect public health.


Source: https://www.sciencedaily.com/releases/2026/03/260315225125.htm

Journal Reference:

  1. Kazi Md. Mahmudul Hasan, Lisa M. Barnhill, Kimberly C. Paul, Chao Peng, William Zeiger, Beate Ritz, Marisol Arellano, Michael Ajnassian, Shujing Zhang, Aye Theint Theint, Gazmend Elezi, Hilli Weinberger, Julian P. Whitelegge, Qing Bai, Sharon Li, Edward A. Burton, Jeff M. Bronstein. The pesticide chlorpyrifos increases the risk of Parkinson’s disease. Molecular Neurodegeneration, 2025; 21 (1) DOI: 10.1186/s13024-025-00915-z

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