Chlorpyrifos Exposure Linked to Child Brain Damage
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- The study published in JAMA Neurology reported that prenatal chlorpyrifos exposure is linked to widespread brain structural, functional, and metabolic abnormalities in children.
- Researchers from Columbia Mailman, Children’s Hospital Los Angeles, and USC’s Keck School of Medicine followed 270 children born to African‑American and Latino mothers with detectable CPF in umbilical cord blood, assessing them at ages 6‑14 with imaging and motor tests.
- Higher prenatal CPF levels showed a dose‑dependent association with poorer motor speed and programming performance and more extensive brain alterations.
- The EPA banned indoor residential use of chlorpyrifos in 2001, yet the pesticide remains in agricultural use, exposing farm workers, pregnant women, and children to dust and outdoor air.
- Virginia Rauh warned that current exposure levels comparable to the study sample continue to place vulnerable populations at risk and called for continued monitoring.
- Bradley Peterson cautioned that similar widespread brain disturbances may occur with other organophosphate pesticides, urging precaution during pregnancy and early childhood.
- Funding came from the National Institute of Environmental Health Sciences, EPA STAR, NIMH, and private foundations, while Dr. Peterson disclosed patents and corporate roles as potential conflicts of interest.
Why it matters: The study underscores that prenatal chlorpyrifos exposure—still common in agricultural settings—causes measurable brain damage and motor impairment, directly affecting children of farm workers and pregnant women, prompting calls for intensified monitoring and precautionary exposure controls to safeguard vulnerable communities in the United States.
