Some studies have said that excess fluoride exposure, often at higher levels than the recommended U.S. limit, can harm ...

Research has generally shown that fluoridated water at recommended levels is safe. But many experts and a judge say more research is needed to better understand whether and when risks kick in.

“Aside from fluoride’s impacts on neurodevelopment, I think that there is more that we don’t know about health effects of low-level fluoride exposure ... fortifying salt with iodine, milk with vitamin ...