A new report from the National Academies of Sciences, Engineering, and Medicine has backed a 2022 U.S. Environmental Protection Agency draft toxicological risk assessment review that found formaldehyde to be a human carcinogen linked to cancers such as leukemia. The Aug. 9 report was challenged by the American Chemistry Council (ACC) that claimed numerous flaws with the EPA’s review process and the report from NASEM. “Overall, the report finds that EPA’s draft assessment follows the advice of prior National Academies reports and that the agency’s findings on hazard and quantitative risk are supported by the evidence identified in the document. The report recommends that EPA revise the document to ensure that users can find and follow the methods used in each step of its assessment for each health outcome. The study — undertaken by the Committee on the Review of EPA’s 2022 Draft Formaldehyde Assessment — was sponsored by the U.S. Environmental Protection Agency.