Researcher: Pesticide Exposure Is "Universal" in Farmworker Communities; Urges Biomonitoring

Aug 11, 2026

Dr. Ana Maria Mora, citing the CHAMACOS cohort, testified that prenatal pesticide exposure is pervasive and linked to developmental, respiratory and neurologic harms, and urged creation of ongoing biomonitoring and buffer protections for children and schools.

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Ana Maria Mora, an environmental epidemiologist at the University of California, Berkeley, summarized findings from the CHAMACOS birth cohort and said exposure to pesticides begins in utero. "Exposure to pesticides is universal, and it begins before birth," she told lawmakers, describing detection of pesticide breakdown products in nearly all urine and breast‑milk samples collected in her study.

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