For decades in the United States, fluoride has been added to drinking water to strengthen teeth and prevent tooth decay, and this practice has been considered a major public health success.
A report released Wednesday concluded that exposure to fluoride at levels twice the recommended level is associated with lower IQ in children. It is the first time a federal agency has made such a link, saying it has “moderate confidence.”
The analysis, which examined studies in countries such as Canada, China, and Mexico, found that children exposed to more than 1.5 milligrams of fluoride per liter of water consistently had IQ scores that were 2 to 5 points lower than those exposed to less than 1.5 milligrams of fluoride per liter of water. Who is less affected? Although the report does not provide a precise definition of fluoride exposure at different levels of exposure, it does highlight potential risks associated with higher concentrations.
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Source: Ferra
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