U.S. health officials are announcing an effort to phase out ingestible fluoride supplements used to strengthen children’s teeth, citing possible health risks.

Florida is poised to become the second state to ban fluoride in public drinking water, over the concerns of dentists and public health advocates who say the mineral is a safe, effective way to protect people of all ages from developing cavities.

Utah's governor intends to sign legislation making the state the first to ban fluoride in public water systems.