Drug Story

On fluoride and tooth decay

You may not think of fluoride as a drug, but it fits the bill: The FDA classifies fluoride as a drug, an essential nutrient to human health, and regulates its use. So yeah. It’s a drug.Fluoride used to be boring. 75% of US water is fluoridated, and it has greatly reduced the rate of tooth decay in this country and worldwide. Fluoridation has been among the biggest success stories in medical history.But like a lot of medicine these days, fluoride is suddenly controversial. Again. Here and there, governments - the whole state of Utah, towns all over Florida - have removed fluoride from water. And predictably, the rate of tooth decay in children soars afterwards.Still fluoride is also a riddle. Because while the US has had a lot of success with fluoride, most countries do NOT add it to their water - and many non-fluoridated countries have much the same rate of tooth decay as the US. Is fluoride toothpaste enough?What is going on with fluoride?!4 out of 5 dentists recommend you listen to this episode to the end!Sources for this episode [1] Dentition of a Mesolithic Population (1967) American Journal of Physical Anthropology: Pre-industrial populations experienced significantly lower rates of dental caries, demonstrating the impact of modern diet and environment on oral disease.[2] Toothache (1994) Poetry Foundation: William Greenway: William Greenway’s visceral portrayal of dental pain.[3] A Colorado Story (2015) Colorado Dental Association: Naturally fluoridated water was definitively linked to reduced tooth decay, establishing the scientific basis for fluoridation policy.[4] The Story of Fluoridation (2024) National Institute of Dental and Craniofacial Research: Fluoridation emerged from observed natural fluoride exposure and was adopted as a nationwide preventive health strategy.[5] Pipe Dreams: America’s Fluoride Controversy (2011) Science History Institute Museum & Library: Water fluoridation sparked decades of political and scientific conflict, becoming one of the most contested public health interventions in U.S. history.[6] Big Hopes for Little Teeth (2024) National Institute of Dental and Craniofacial Research: Fluoridation significantly reduced childhood tooth decay and became a foundational population-level prevention strategy.[7] Community Water Fluoridation in Focus: A Comprehensive Look at Fluoridation Levels across America (2023) International Journal of Environmental Research and Public Health: Access to fluoridated water varies widely across the U.S., reinforcing geographic and socioeconomic disparities in preventive oral health.[8] Water fluoridation less effective now than in past (2024) Cochrane: Fluoridation still reduces cavities, but the magnitude of benefit is smaller than in the mid-20th century.[9] Water fluoridation for the prevention of dental caries (2024) Cochrane Library: Fluoridation consistently lowers rates of tooth decay across populations, though evidence quality and modern applicability vary.[10] Research review contends fluoride in water is less effective than in 1970s (2024) American Dental Association: The marginal benefit of water fluoridation has decreased due to widespread fluoride exposure from toothpaste and other sources.[11] Out of Pocket: A Snapshot of Adults’ Dental and Medical Care Coverage (n.d.) CareQuest Institute: Lack of dental coverage forces many adults to delay or forgo care, increasing reliance on low-cost public health interventions like fluoridation.[12] Health Disparities in Oral Health (2024) CDC: Oral health outcomes are consistently worse for low-income and minority populations due to structural barriers and uneven access to prevention.[13] Two Cities Fluoride Removal Evidence (2025) Science News: Discontinuing fluoridation results in measurable declines in dental health outcomes.[14] What happened when Juneau took fluoride out of the drinking water? (2019) University of Alaska Anchorage: Removing fluoridation leads to increased tooth decay and higher rates of dental procedures, especially in children.[15] The Fluoride Wars Rage On (2021) nature: Fluoridation remains politically and culturally polarizing despite decades of scientific support. Get full access to Drug Story at www.drugstory.co/subscribe

Mar 31, 202612 min read