The U.S. Food and Drug Administration has begun the process to eliminate fluoride drops and tablets prescribed to children to prevent tooth decay. ... The [FDA] says ingestible fluoride is linked to various adverse health effects, but dental groups say it is 'essential' for cavity prevention, particularly among people who can't afford to regularly visit a dentist.

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Though fluoride helps prevent cavities, the supplements have been linked to weight gain, thyroid issues, decreased IQ and altered gut microbe, the FDA said.

Kennedy also has vowed to try to eliminate fluoride added to public drinking water, previously calling it "an industrial waste associated with arthritis, bone fractures, bone cancer, IQ loss, neurodevelopmental disorders, and thyroid disease."

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"Rigorous reviews of fluoride safety have consistently found no credible evidence linking it to systemic or adverse health issues," the American Academy of Pediatrics notes. "... [O]ptimal fluoridation does not pose a detectable risk of cancer or other serious health issues."