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It is a scenario playing out nationwide. From Oregon to Pennsylvania, hundreds of communities have in recent years either stopped adding fluoride to their water supplies or voted to prevent its addition. Supporters of such bans argue that people should be given the freedom of choice. The broad availability of over-the-counter dental products containing the mineral makes it no longer necessary to add to public water supplies, they say. The Centers for Disease Control and Prevention says that while store-bought products reduce tooth decay, the greatest protection comes when they are used in combination with water fluoridation.
The outcome of an ongoing federal case in California could force the Environmental Protection Agency to create a rule regulating or banning the use of fluoride in drinking water nationwide. In the meantime, the trend is raising alarm bells for public health researchers who worry that, much like vaccines, fluoride may have become a victim of its own success.
The CDC maintains that community water fluoridation is not only safe and effective but also yields significant cost savings in dental treatment. Public health officials say removing fluoride could be particularly harmful to low-income families — for whom drinking water may be the only source of preventive dental care.
“If you have to go out and get care on your own, it’s a whole different ballgame,” said Myron Allukian Jr., a dentist and past president of the American Public Health Association. Millions of people have lived with fluoridated water for years, “and we’ve had no major health problems,” he said. “It’s much easier to prevent a disease than to treat it.”
According to the anti-fluoride group Fluoride Action Network, since 2010, over 240 communities around the world have removed fluoride from their drinking water or decided not to add it.
Please do your own research, as this is a very controversial subject which has been fought since its inception, with entrenched opinions. Here's a primer:
Most of the research done on fluoridating tap water was done in the early 1940s & 50s, well in advance of modern dental hygiene and fluoridated toothpaste use. Studies do definitively show applying fluoride directly to teeth does strengthen tooth enamel, but modern studies are mixed, at best, regarding efficacy of fluoridated tap water between equivalent socioeconomic communities. No studies have been conducted regarding dermal absorption of fluoride , believed to further elevate intake.
I think the simplest solution is to let people choose for themselves, and add fluoride to their personal drinking water if that's what they choose.
We don't need to fluoridate water in our toilets, showers, or irrigation.
I just want to point out that too much of anything is bad, because that's what "too much" means. Saying "but too much of x is bad" is such a dumb argument, that I always bring this up.
The delta between fluoride levels considered "theraputic" and "harmful" (per the WHO) is quite small. The most effective use of fluoride is topical (applying to teeth) rather than oral.