Society Letters

Endocrine Society Comments on Proposed Interim Registration Review Decision for Chlorpyrifos

March 03, 2021

Dear Members of the Office of Pesticide Programs:

The Endocrine Society appreciates the opportunity to comment on the proposed interim registration review decision for chlorpyrifos. Founded in 1916, the Endocrine Society is the world’s oldest, largest, and most active organization dedicated to the understanding of hormone systems and the clinical care of patients with endocrine diseases and disorders. Our membership of nearly 18,000 includes researchers who are advancing our understanding of the effects of exposures to chemicals that interfere with hormone systems, also known as endocrine-disrupting chemicals (EDCs). As an endorsing organization for the original Project TENDR consensus statement1, we fully support the letter submitted by project TENDR summarizing the evidence linking chlorpyrifos to neurodevelopmental harm and concluding that existing chlorpyrifos tolerances do not comply with the “reasonable certainty of no harm” standard in the Food Quality Protection Act (FQPA). Our comments below offer additional evidence for EPA to consider regarding the effects of chlorpyrifos on endocrine systems."

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