The National Toxicology Program, part of the Department of Health and Human Services, released its “Monograph on the State of Science Concerning Fluoride Exposure and Neurodevelopment and Cognition,” which found that fluoride in drinking water at more than twice the recommended limit is associated with lower IQ in children. The ADA has reviewed the monograph and continues to stand behind community water fluoridation.
The long-awaited report, which follows two previous drafts in 2019 and 2020, summarizes the available literature about a possible relationship between fluoride exposure, neurodevelopmental and cognitive health and IQ. The report’s authors acknowledge the findings are limited to fluoride exposures that are more than double (≥1.5 mg/L) what the CDC recommends for community water fluoridation (0.7 mg/L).
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