Florida Gov. Ron DeSantis has signed a measure that prohibits local governments from adding fluoride to water systems.

Florida has officially become the second state to ban the use of fluoride in its public water supply, marking a major win for Health and Human Services Secretary Robert F. Kennedy Jr.

Florida became the second state to ban fluoride in its water supply on Thursday, as use of the mineral used to strengthen teeth increasingly comes under attack from Republicans. Florida Governor Ron DeSantis signed the bill banning fluoride,