A new study has found that people exposed to the recommended levels of fluoride in drinking water do not experience negative cognitive impacts, which contrasts the studies citied by the Trump administration on the subject.

Health Secretary Robert F. Kennedy Jr has long been an advocate for removing fluoride from drinking water, citing studies that found a correlation between fluoride in drinking water and a reduction in child IQ.

Some states - such as Florida and Utah - have already taken measures to ban the addition of fluoride to public drinking water systems, however, this latest study suggests that fluoride may not have a negative impact on cognitive health, and possibly the opposite effect.

Newsweek has contacted HHS via email for comment.

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