Drink this in.

New research challenges recent claims about the risks of fluoride in drinking water, reporting that in addition to preventing cavities, the additive may actually improve test scores.

A 2024 report from the federal National Toxicology Program determined with “moderate confidence” that higher levels of fluoride are associated with lower IQ scores.

Those findings sparked uproar, as the studies that inspired the report primarily focused on countries with far higher levels of fluoride than considered safe in the US.

That review did not ascertain whether the current recommended low fluoride level of 0.7 milligrams per liter for US community water supplies harms children’s IQ.

The new study , published in the journal Science Advances, focused on US-recommended levels of fl

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