Story perspectives

Study Finds No Cognitive Impact from Water Fluoridation

4/14/2026

Summary

Story summary

A study in the Proceedings of the National Academy of Sciences found no link between community water fluoridation and cognition.
Rob Warren, the lead researcher, led the study, analyzing data from over 10,000 Wisconsin participants, finding no cognitive differences.
Despite the findings, some communities have banned fluoride over health concerns.
A fluoride shortage in the U.S. has arisen from disruptions caused by the Middle East war, affecting several water utilities.

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Story summary

A study in the Proceedings of the National Academy of Sciences found no link between community water fluoridation and cognition.
Rob Warren, the lead researcher, led the study, analyzing data from over 10,000 Wisconsin participants, finding no cognitive differences.
Despite the findings, some communities have banned fluoride over health concerns.
A fluoride shortage in the U.S. has arisen from disruptions caused by the Middle East war, affecting several water utilities.