Robert F. Kennedy Jr.'s recent comments on fluoride are prompting questions about its safety in drinking water. Here's what to know.

For years, local water authorities have considered the addition of low concentrations of fluoride to drinking water a public health achievement. The Centers for Disease Control and Prevention recommends it, citing evidence showing that fluoride prevents cavities in children — the No. 1 chronic disease in kids.

The U.S. Public Health Service’s recommended level of fluoride concentration is 0.7 milligrams of fluoride per liter of water, though the CDC says this is not an enforceable standard. When will House results come out?

"On January 20, the Trump White House will advise all U.S. water systems to remove fluoride from public water. Fluoride is an industrial waste associated with arthritis, bone fractures, bone cancer, IQ loss, neurodevelopmental disorders, and thyroid disease," Kennedy said on social media over the weekend.

Robert F. Kennedy Jr., who is expected to have a spot in the Trump administration, feels fluoride can lead to a slew of health problems.

Robert F. Kennedy Jr. said that on Day One the Trump administration would remove fluoride from public water, should Trump be elected.

Fluoride is added to drinking water across the U.S., but residents of some states are considerably more likely to be drinking fluoridated water than others, according to data from the U.S. Centers for Disease Control and Prevention (CDC) Fluoride in drinking water has recently become a talking point following Robert F.