The state's surgeon general has already convinced at least 11 municipalities to stop adding the naturally occurring mineral into the water, using his high profile as Florida’s top health officer and a recent official recommendation against fluoride use.

Paulhus has spent the last 39 years fighting to get fluoride removed from Newburyport's drinking water. She writes letters to local newspapers, speaks up at community meetings, and personally, uses non-fluoridated dental products because she believes fluoride is poison.

Robert F. Kennedy Jr. has blamed fluoride in drinking water for ailments from arthritis to bone cancer to thyroid damage. “I was called a conspiracy theorist because I said fluoride lowered IQ,” Kenne

In Buffalo, New York, city officials recently brought fluoride back online following a class action lawsuit from residents. The suit was filed after an investigative reporter found that the city had not been adding fluoride to its water for nine years, unbeknownst to residents.

Robert F. Kennedy Jr., President Trump's pick for HHS secretary, is likely to face questions about his stance on fluoride in drinking water when he goes before the Senate on Wednesday for a confirmation hearing.