Minnesota Study Finds No Link Between Fluoride in Drinking Water and Lower IQs in Children

Thursday, April 16th, 2026 -- 8:01 AM

(Wisconsin Radio Network) A new University of Minnesota study finds no link between fluoride in drinking water and lower IQs in children.

According to the Wisconsin Radio Network, researchers analyzed data from ten thousand Wisconsin high school seniors, spanning nearly seventy years. Lead researcher Professor Rob Warren says IQ scores were the same whether students grew up with fluoridated water, naturally occurring fluoride, or none at all.

Warren says earlier studies that raised concern focused on extremely high fluoride exposure levels, not the low amounts used in public drinking water systems.

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