Fifteen states have introduced bills to ban or limit fluoride in tap water since January. Utah and Florida already enacted bans in 2025. RFK Jr. has called fluoride a neurotoxin and industrial waste. The EPA released a preliminary risk assessment that the American Academy of Pediatric Dentistry, representing over 11,000 pediatric dental specialists, formally described as relying on "discredited reports and inapplicable information." This is a lot of political energy aimed at dismantling something that works.
Let me state the efficacy question plainly: fluoride at the recommended concentration of 0.7 milligrams per liter reduces tooth decay in children. This is not a contested finding among people who study it carefully. The NHMRC's comprehensive scientific assessment found fluoridated water significantly reduces dental decay in children and adults. Decades of epidemiological data across multiple countries point the same direction. The anti-fluoride movement is not fighting a close call.
The Study That Started the Panic Doesn't Say What People Think It Says
A 2025 study published in JAMA Pediatrics linked high fluoride exposure to lower IQ in children. That study traveled fast on social media. What traveled slower: the association appeared only at concentrations far above the 0.7 mg/L standard used in American tap water. Citing that study to ban community fluoridation is like banning aspirin because acetaminophen overdoses cause liver failure. The dose determines the toxicity. This is pharmacology 101.
The EPA's preliminary assessment leans heavily on the 2024 National Toxicology Program report. The AAPD notes that report failed peer review and drew primarily from studies conducted outside the United States, at exposure levels that do not reflect American fluoridation practice. The EPA's assessment also excludes health benefits from its analysis entirely. The AAPD called this "irresponsible." I would not choose a softer word.
Here is the tension I'll acknowledge: we should not be indifferent to any study linking a widespread environmental exposure to neurodevelopmental outcomes, even a flawed one. That concern is scientifically legitimate. The correct response is better-designed studies at relevant exposure levels, not banning a 0.7 mg/L intervention because studies at three or four times that concentration showed an effect.
What Happens When Communities Pull Fluoride
We do not have to speculate about consequences. The AAPD cites data from countries that intentionally removed fluoride from water supplies: children experienced increases in dental pain, infection, and missed school days. Cavities are not a cosmetic inconvenience. Untreated dental disease in children causes chronic pain, disrupts sleep, and drives school absences. It disproportionately hits low-income kids who cannot afford fluoride treatments at the dentist.
Mild dental fluorosis, the cosmetic spotting that appears at somewhat higher exposures, is the strongest legitimate concern at current American levels. The AAPD notes that mild fluorosis has no pathological qualities and often correlates with lower rates of tooth decay. The EPA's decision to classify it as a "toxic adverse effect" in its assessment is not supported by the clinical evidence and distorts the risk-benefit picture dramatically.
Donald Chi, a pediatric dentist at the University of Washington who studies fluoride hesitancy, warned that anti-fluoride political stances will erode trust in fluoride treatment broadly, including professional applications during dental visits. That erosion has consequences beyond tap water.
Congress should not fund an EPA fluoride assessment that explicitly excludes benefits from its methodology. State legislators introducing fluoride bans should read the AAPD's formal comments before their next committee vote. And pediatric dentists should be loudly in the room wherever these decisions are being made, because they are the ones who will see the cavities.
