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Is Fluoride in Water Actually Dangerous?
Food & Wine ^ | April 23, 2025 | Lauren Manaker MS, RDN, LD, CLEC

Posted on 04/23/2025 1:07:45 PM PDT by nickcarraway

Here's what you need to know about this hot button topic.

Key Points:

-Political controversy has stoked new conversations around the fluoridation of water and whether the mineral is safe to consume.

-Water fluoridation, or the practice of adding fluoride to sources of drinking water, has been credited as one of the greatest public health innovations of the 20th century and helps protect tooth enamel and prevent cavities.

-Dental experts and research say that water fluoridation provides vital dental support for communities, is proven to reduce rates of tooth decay, and is safe when kept at recommended concentrations. Although the addition of fluoride to drinking water has been credited for protecting the dental health of millions of Americans, it has also been a topic of controversy for decades, and the debate has recently been reignited.

United States Secretary of Health and Human Services Robert F. Kennedy Jr. has clearly expressed his opposition to water fluoridation. Recently, Utah became the first state to ban fluoride in drinking water, and late last year, Florida Surgeon General Joseph Ladapo issued public guidance advising communities against fluoridating their water.

While some celebrate it as a public health triumph, others question the safety and necessity of adding fluoride to drinking water. Let's explore what fluoride is, its history in water fluoridation, and what current research reveals about its implications for our health.

What is fluoride?

Fluoride is a naturally occurring mineral found in soil, water, and certain foods. It is best known for its ability to strengthen teeth and prevent cavities. When fluoride is applied to teeth, it helps rebuild enamel and may reverse early signs of tooth decay.

According to the CDC, “Almost all water contains some naturally occurring fluoride, but usually at levels too low to prevent cavities.” Due to its potential benefits for dental health, fluoride has been widely added to dental products such as toothpaste and mouthwash, as well as to public water supplies.

Why is fluoride added to water in the United States? The practice of adding fluoride to drinking water began in 1945 in Grand Rapids, Michigan, when researchers embarked on a project to determine if water fluoridation would effectively reduce the rate of tooth decay among local children. The results were clear: Kids born after fluoride was introduced to the water supply experienced a 60% reduction in their rate of tooth decay. (Today, it's estimated that water fluoridation lessens your risk of cavities by about 25%.)

These findings made the research a remarkable success, and fluoridation became widespread across the United States in the following decades. The CDC has previously recognized community water fluoridation as "one of the 10 greatest public health achievements of the 20th century." By increasing the accessibility of fluoride, public health officials have observed significant improvements in dental health, particularly in communities with limited access to professional dental care.

However, water fluoridation has its opponents. Criticism of the practice has existed since its inception, and the debate over whether consuming fluoride is safe, as well as whether communities should have access to water without it, continues into 2025.

How does fluoride improve your dental health?

Fluoride strengthens your tooth enamel and ultimately helps prevent cavities. According to the CDC, “Studies continue to show that widespread community water fluoridation prevents cavities and saves money, both for families and the health care system. Drinking fluoridated water keeps teeth strong and reduces cavities by about 25% in children and adults.”

Dr. Lauren Becker, DDS, PC, owner and general dentist of her namesake dentistry practice in New York City, explains further, telling Food & Wine that “Fluoride acts as a dental barrier between teeth and helps keep the teeth strong during everyday use like chewing, drinking, and eating.” She adds, “Fluoride creates a shield so that the tooth is protected from potential bacteria, plaque, and overall buildup from occurring.”

Is fluoride in water safe?

Opponents of water fluoridation, including RFK Jr., have raised concerns that the mineral is linked to various health and developmental issues, such as cancer, weakened bones, and declines in IQ. But is there any merit to their claims?

A little background information is helpful here. To maximize the benefits of this mineral in water systems, the U.S. Public Health Service (PHS) recommends a fluoride concentration of 0.7 milligrams per liter (mg/L) in drinking water, which is considered optimal for preventing tooth decay while minimizing potential side effects.

In 2024 the National Toxicology Program (NTP) published a systematic review of research surrounding the connection between fluoride and cognitive development. This study did discover that higher levels of fluoride, such as those found in drinking water with more than 1.5 mg/L of fluoride, “are associated with lower IQ in children.”

A level of fluoride greater than 1.5 mg/L would exceed the guidelines for drinking water set by the World Health Organization and could lead to issues such as dental fluorosis — a cosmetic issue that causes discoloration of tooth enamel — or, more concerningly, skeletal fluorosis — a bone disorder.

The NTP notes that “There were insufficient data to determine if the low fluoride level of 0.7 mg/L currently recommended for U.S. community water supplies has a negative effect on children’s IQ,” and it “found no evidence that fluoride exposure had adverse effects on adult cognition.”

These findings suggest that further research is necessary to gain a clearer understanding of the connection between lower levels of fluoride (like those found in water supplies) and IQ.

Per Becker, beyond cognitive development, “There are speculations that fluoride in our drinking water may cause alternative health issues like thyroid problems or impact bone health. However, this is not scientifically backed.” The dental professional explains, “It's true that overexposure to fluoride has the potential to create other issues, but this is unlikely to occur from the safe amounts in drinking water.”

Finally, a majority of health resources, including the American Cancer Society and City of Hope — a nonprofit clinical research center for cancer — note that there is no clear or conclusive link between fluoride and cancer.

How much fluoride is in my water?

Want to ensure your drinking water has an appropriate level of fluoridation? To check the fluoride levels in your community's water supply, the CDC offers a helpful tool called My Water's Fluoride. This online resource allows users to verify if their local water is fluoridated and at what concentration.

Can removing fluoride from water cause harm?

Calgary, Canada, presents a relatively recent example of what can happen if a community decides to remove fluoride from its water.

After eliminating the mineral from its water supply in 2011, the city observed a significant increase in tooth decay and related issues — particularly among children — when compared to another major city in its province that had continued water fluoridation.

As a result, Calgary voted to reinstate water fluoridation in 2021 in response to the increase in tooth decay, although the mineral has not yet been successfully reintroduced.

What are the long term impacts of fluoride?

Supporting the strength of your teeth isn’t just about achieving a picture-perfect smile. Dental health can impact overall health, quality of life, and financial well-being.

If left untreated, tooth decay can lead to pain, infections, and even tooth loss, potentially affecting daily activities such as eating or speaking. Furthermore, the economic burden associated with dental issues can be substantial, as fillings, root canals, and extractions often incur high costs for individuals and healthcare systems.

Why Drinking Bottled Water Can Be Much Worse for You Than Tap, According to New Research

Per the CDC, “Communities of 1,000 or more people see an average estimated return on investment (ROI) of $20 for every $1 spent on water fluoridation. The ROI for community water fluoridation increases as the community size increases, but even small communities save money.” Adults and children are also likely to miss fewer days of work or school for dental appointments.

Although more research is welcome and needed, as the facts stand, dental experts and scientists have made it clear that water fluoridation benefits both your teeth and the community, as long as it is maintained within recommended levels.


TOPICS: Food; Health/Medicine; Science
KEYWORDS: fluoridation; fluoride; no; paranoia
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To: SPDSHDW

There have been times when I’ve turned on the faucet and there’s a very strong chlorine odor.


81 posted on 04/23/2025 3:20:35 PM PDT by MayflowerMadam (It's hard not to celebrate the fall of bad people. - Bongino)
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To: DugwayDuke

What are they then?


82 posted on 04/23/2025 3:44:51 PM PDT by nickcarraway
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To: DugwayDuke

Also: How come one must be 100% accepting of 100% of vaccines with no questions, or 100% against vaccines, with zero between those?


83 posted on 04/23/2025 3:45:45 PM PDT by nickcarraway
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To: nickcarraway

nickcarraway wrote: “What are they then?”

Depends. No one label fits them all.


84 posted on 04/23/2025 3:53:56 PM PDT by DugwayDuke (Most pick the expert who says the things they agree with.)
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To: nickcarraway

nickcarraway wrote: “Also: How come one must be 100% accepting of 100% of vaccines with no questions, or 100% against vaccines, with zero between those?”

Never said that. There are some here on FR who are against all vaccines. Some are only against some vaccines.


85 posted on 04/23/2025 3:57:02 PM PDT by DugwayDuke (Most pick the expert who says the things they agree with.)
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To: DugwayDuke

Okay, I just thought you lump them all together.


86 posted on 04/23/2025 3:58:36 PM PDT by nickcarraway
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To: nickcarraway

“People buy Mexican coke with real sugar in glass bottles.”

Now 40% HFCS.


87 posted on 04/23/2025 3:58:44 PM PDT by TexasGator (1'11/'~~'111./.)
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To: nickcarraway
It is suspicious that they lump the two forms of fluoride together that most commonly enters the human body as the same (Fluoride). That is not true.

Natural Fluoride = Calcium fluoride (CaF2) - Not water soluble and I could not find the word "POISON" associated with it at MSDS.

Industrial Waste Fluoride = Fluorosilicic acid- (ala Sodium Fluoride, which is water soluble and that is what we drink. And it IS listed as a "POISON" at MSDS.

88 posted on 04/23/2025 4:03:44 PM PDT by Karl Spooner (Putin: "Time to finish off the Ukraine troops"- 3/28/25)
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To: nickcarraway

Addition of fluoride in a rinse? Good. Drinking it every day, really bad.


89 posted on 04/23/2025 4:38:41 PM PDT by Glad2bnuts
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To: MayflowerMadam

I filter my water also, the chlorine is to get rid of germs, fluoride is to make money for the city water systems.


90 posted on 04/23/2025 4:41:09 PM PDT by Glad2bnuts
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To: Jim Noble

I drink 100 plus ounces of water, coffee and other sources per day.


91 posted on 04/23/2025 4:42:23 PM PDT by Glad2bnuts
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To: nickcarraway

The declarative statement “I believe in vaccines” is like the declarative statement “I believe in pills”.


92 posted on 04/23/2025 5:11:54 PM PDT by Jim Noble (Assez de mensonges et de phrases)
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To: JonPreston

Thank Jon..


93 posted on 04/23/2025 5:13:08 PM PDT by GOPJ (If 11 million illegals must have 'due process' to be deported - it'll bankrupt our court system.)
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To: nickcarraway

There is no substance “fluoride”. There are compounds consisting of another element and fluorine, and they are called fluorides. Such as sodium fluoride or stannous fluoride.

These two dissolve in water. Sodium fluoride is chemically stable. It doesn’t break down. So it accumulates (my opinion). I would like to know if it’s accumulating in the waterways and oceans and what the effect of that is.


94 posted on 04/23/2025 5:29:02 PM PDT by I want the USA back (America is once again GREAT!)
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To: logi_cal869

“Any Conservative who reads that passage, doesn’t see its similarity to ‘climate’ science BS - let alone the jabs - and fails to dismiss such statements should have their head examined.”

Any conservative that reads your post and doesn’t see you bias against science affects your logic should have the8r head examined.


95 posted on 04/23/2025 6:00:18 PM PDT by TexasGator (1'11/'~~'111./.)
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To: E Pluribus Bellum

Water is a chemical…. So they are putting chemicals in your chemicals ?

Oh no, your water is 100% chemicals, the horror !!!


96 posted on 04/23/2025 7:08:02 PM PDT by Pikachu_Dad
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To: Jim Noble

This is from some European public health website-

https://ec.europa.eu/health/scientific_committees/opinions_layman/fluoridation/en/l-2/2.htm

“Once in the blood, fluoride is gradually removed via the kidneys, reducing to half its original level in between three and ten hours. The long-term blood level is influenced by daily exposure as well as by take-up in growing bone and release as old bone is broken down. Children clear fluoride about as rapidly as adults.”


97 posted on 04/23/2025 8:26:52 PM PDT by Pelham (President Eisenhower. Operation Wetback 1953-54)
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To: nickcarraway
Kids born after fluoride was introduced to the water supply experienced a 60% reduction in their rate of tooth decay.

I remember reading an article about European countries. Some fluoridated water, some didn't. Tooth decay drops were the same in all the countries.

Now let's see an article about the dozen other chemicals added to water to prevent the fluoride from destroying water pipes.

98 posted on 04/23/2025 9:07:16 PM PDT by aimhigh (1 John 3:23 "And THIS is His commandment . . . . ")
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To: the OlLine Rebel; DugwayDuke

Rushing the vaccine into production was the whole point of Operation Warp Speed. Trump wanted a vaccine within a year and he got his wish. Covid was a SARS virus, only the second one ever seen. The first SARS back in 2002-2003 had a mortality rate over 10%. That’s higher than the 1918 Flu and it’s why the CDC panicked.

“the rushed COVID vaccines (pushed by a certain someone)”

If you’re thinking ‘Fauci’ he had nothing at all to do with creating Warp Speed or the vaccines. The guy who suggested Warp Speed to Trump and then managed it is not hard to discover, except to the usual band of Jab crackpots who apparently can’t figure out how to use Google in 5 full years.


99 posted on 04/23/2025 9:08:38 PM PDT by Pelham (President Eisenhower. Operation Wetback 1953-54)
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To: TexasGator

100 posted on 04/23/2025 9:15:43 PM PDT by logi_cal869 (-cynicus the "concern troll" a/o 10/03/2018 /!i!! &@$%&*(@ -)
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