Public Health and Fluoridation

A recent long-term study tracking people from childhood into older age found no association between community water fluoridation at typical U.S. levels and reductions in IQ or measurable cognitive decline. The research followed cohorts with documented exposure to fluoridated drinking water across the life course — including childhood — and compared cognitive outcomes later in life, concluding that standard fluoridation practices do not appear to harm brain development or cognition. The finding comes amid an active public debate over the safety and public-health value of water fluoridation.