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Is Fluoride Good for Your Teeth? Know the Science & the Risks

Robyn Openshaw - Nov 16, 2018 - This Post May Contain Affiliate Links

Is Fluoride Good for Your Teeth? | Green Smoothie Girl

Unless you’ve been living as a recluse for the last 60 years, you are aware that fluoride has been sold to the American public as a benefit to your dental health. You can’t miss the TV commercials produced by the American Dental Association (ADA) proclaiming fluoride’s ability to prevent tooth decay and cavities.

Your traditional dentist may very well suggest toothpaste with fluoride and a “fluoride treatment” for your child every six months.

So great are the purported benefits of this chemical that it was introduced into many of our municipal public water supplies, beginning in 1945 when Grand Rapids, Michigan, added 1.0 ppm (parts per million) to their community water. Today, 74.4 percent of the U.S population on public water systems have fluoridated water.

Fluoride is now present in in tap water across the United States. Photograph of a glass being filled with tap water.

More than 74.4 percent of the U.S population on public water systems have fluoride in their water.

The Healthy People 2020 Objective is a government-sponsored committee designed to identify health-improvement priorities. One of their objectives is to increase fluoridated public water supplies to 79.6 percent by 2020.1

And according to the CDC, community water fluoridation is one of the “10 great public health achievements of the 20th century.”

Not everyone agrees.

The Cochrane Collaboration, a group of doctors and researchers dedicated to assessing the effectiveness of public health policies, reviewed every study they could find on fluoridation and its effects on cavities.

Surprisingly, they only found three studies since 1975 that were comprehensive enough to be included in their review, and the conclusion was that “fluoridation does not reduce cavities to a statistically significant degree in permanent teeth.”3

Is it possible that fluoride is in our water due to politics and financial interests--rather than the health interests of the American public?

What Is Fluoride?

Calcium fluoride is a natural mineral found throughout the earth’s crust, and it is in our soil, air, water, and some plant and animal food sources.

Nature often combines poisons and antidotes, and such is the case with this mineral. Fluoride is actually a poison and calcium is the antidote. Combining the two leads to a relatively harmless substance.

However, sodium fluoride, sodium fluorosilicate, and hydrofluorosilicic acid are the synthetic compounds called "fluoride" that are commonly added to our drinking water. Fluorosilicic acid is the most common. It is derived from an industrial byproduct of the phosphate fertilizer industry.

The fluoride in our water comes from the phosphate fertilizer industry. Photo of a industrial plant.

Fluorosilicic acid is derived from the unpurified industrial by-product of the phosphate fertilizer industry.

Basically, the industry installs “wet scrubbers,” which trap gases that were deemed environmentally toxic. The liquid, known as hydrofluorosilicic acid, is then shipped to water departments around the country.

It is then added to the water supply in an amount that exceeds amounts of the natural compound found in water by 5 to 50 times.

Some say it’s an ideal solution. What better way to get rid of a toxic by-product produced from fertilizer manufacturers than to put it in our drinking water supply?

Fortunately, there are some people in the industry that see the folly in this form of thinking.

Dr. William Hirzy, former senior vice president of the Environmental Protection Agency (EPA) Headquarters Union of Scientists and Professionals and current Chemist in Residence at American University, calls the act of putting fluoride into our drinking water a “hazardous waste management tool” that has nothing to do with dental health.

It is, in essence, an act designed to protect the reputation of the people and groups that have been defending the use of fluoride for years. In an interview that you can see here, Dr. Hirzy stated the following:

If this stuff gets out in the air, it’s a pollutant; if it gets into the river, it’s a pollutant; if it gets into the lake it’s a pollutant; but if it goes right into your drinking water system, it’s not a pollutant.3

In 2013, the EPA received a petition from Dr. Hirzy asking for the use of hydrofluorosilicic acid as a water fluoridation agent to be banned under the Toxic Substance Control Act. On August 6, 2013, the EPA denied the request because of insufficient evidence as to the health risks.

This is what we do know: Fluoride is a poison. In fact, it is listed in the Merck Manual, the standard manual on disease and toxins referenced by physicians, as a “lethal poison.” And there is enough of it in one tube of fluoridated toothpaste to kill a 20-pound child.4

What Are The Effects Of Fluoride On The Human Body?

First, let’s take a look at what fluoride can do to vehicles and water pipes. In 2014, the Board of Aldermen in Buffalo, Missouri banned fluoride use in their public water supply.


Because it was corroding the city’s water pipes and damaging the transportation vehicles. If drinking water with fluoride can do that to a metal pipe, just imagine what it can do the cells, vascular system, tissues, and organs of your body such as the gastrointestinal tract.5

Fluoride is classified as a neurotoxin. Photograph of a bottle with a skull and crossbones label.

In 2014, The Lancet classified fluoride as a dangerous neurotoxin.

This same year, The Lancet, the world’s oldest and most prestigious medical journal, published a report classifying fluoride as a dangerous neurotoxin that falls in the same category as arsenic, lead and mercury.6

These heavy metals act as neurotoxins, exceptionally devastating to the growing child's brain and nervous system, and can lead to autism, attention-deficit hyperactivity disorder (ADHD), and dyslexia.

Fluoride has been shown to damage the human body in other ways as well:

Lower IQ Scores

A Harvard University meta-analysis that reviewed 27 studies published over 22 years found a reverse association between high fluoride exposure and a child’s intelligence level.


Fluorosis is mottling, discoloration, and sometimes pitting of the tooth enamel caused by excessive fluoride. It is estimated that anywhere from 23 to 30 percent of children and 40 percent of adolescents age 12 to 15 who live in areas where fluoride is added to the public water have fluorosis.7 The ADA considers it a cosmetic flaw, but if fluoride is affecting the teeth in this way, what is it doing to the parts of the body you can’t see, such as your bones?

Bone Fractures

The National Research Council found that communities with 4 mg per liter of fluoride (the highest amount allowed) had an increased rate of bone fractures, including hips. At the recommended amount of 1 ppm, it has been shown to increase the occurrence of osteoporosis.8

Bones are, predominantly, made up of the structural protein called collagen. According to an article published in Interdisciplinary Toxicology, “Fluoride disrupts the collagen synthesis resulting in production of imperfect collagen…”9

Endocrine System Issues

Fluoride disrupts the endocrine system, particularly the thyroid gland, by displacing iodine, a mineral essential for proper thyroid functioning. This in turn leads to hypothyroidism and symptoms that include fatigue, obesity, and depression. In 2015, Newsweek published a study conducted in England revealing that towns with a fluoridated water supply had a 30 percent increase in hypothyroidism.10

Compromised Immune System

Fluoride damages the immune system by reducing the white blood cells' ability to destroy bacteria and other foreign invaders.4


Laboratory analysis of fluoride suggests that it is a mutagen, meaning it can cause genetic damage. This type of damage can, ultimately, lead to cancer. According to Fluoride Alert, seven studies conducted since the 1990s show evidence of genetic damage due to fluoride exposure. Osteosarcoma, a rare cancer of the bones that predominantly strikes teenagers, was found to significantly affect more boys who were exposed to fluoride during their mid-childhood growth spurts that occur in the 6th, 7th, and 8th year of life.9

Not-so-fun facts: Did you know that fluoride is one of the key ingredients in an atomic bomb? It’s also found in steel, aluminum, pesticides, Teflon coated pans, waterproof clothing, bricks, fertilizer, drugs, and microwaveable popcorn bags.4

Sick & Tired? Dental Work May be the Culprit

What Are Other Fluoride Sources?

As you know, fluoride is not just in our water supply. It’s also added to toothpastes, mouth rinses, bottled water and teas, as well as fluorinated pharmaceuticals. It’s found in many or our non-organic foods due to pesticide residue. Grapes, dried fruit and beans, and iceberg lettuce are some of the highest sources.

You can avoid fluoride by eating organic food, and choosing natural toothpastes and dental products.

Is Fluoride Added to Drinking Water Around the World?

No. In fact, it is banned in most countries. Only 11 countries in the world fluoridate more than 50 percent of their public water supply, while 97 percent of Western Europe has rejected water fluoridation. When Germany and Finland stopped adding fluoride to their drinking water, rates for dental decay either remained the same or declined.9

How Do I Minimize My Intake Of Fluoride?

Standard filters, unfortunately, do not remove fluoride from water. If you live in a municipality that adds fluoride, consider a reverse osmosis system or buying bottled water without added fluoride. Do not buy juice made from concentrate as almost all production companies use fluoridated water. This goes for sodas as well.

Tooth decay does not occur because you are not ingesting enough fluoride. It happens when sugar is metabolized by bacteria, producing a sugar that attacks your enamel, and allows the bacteria to get into the dentin and create damage and decay. Therefore, the best thing you can do for your family’s teeth is to minimize your processed sugar intake and eat a healthy, organic diet, and clean, mineral-rich water.

Learn more from your biological dentist. Don't have one? Use the Holistic Dentist Finder.

robyn wearing a purple shirt


Robyn Openshaw, MSW, is the bestselling author of The Green Smoothies Diet, 12 Steps to Whole Foods, and 2017’s #1 Amazon Bestseller and USA Today Bestseller, Vibe.



This article was reviewed and approved by Dr. Michelle Jorgensen, DDS, FAGD, TNC, and dental advisor for The information included here is not a replacement for professional diagnosis or treatment; please consult a holistic dental professional.

Is Fluoride Good for Your Teeth? | Green Smoothie Girl


  1. Water Fluoridation Data & Statistics. Community Water Fluoridation. Centers for Disease Control and Prevention.
  2. Healthy People 2020. Office of Disease Prevention and Health Promotion.
  3. Hirzy, William Dr. Dr. William Hirzy & EPA Union on Fluoridation. Fluoride Alert.
  4. Breiner, Mark A DDS. Whole-Body Dentistry. Quantum Health Press. 2011.
  5. Main, Douglas. Fluoridation May Not Prevent Cavities, Scientific Review Shows. Newsweek. 06/2015.
  6. Grandjean, Phillippe et al. Neurobehavioural effects of developmental toxicity. The Lancet. 02/2014.
  7. Beltran, Aguilar Prevalence and Severity of Dental Fluorosis in the United States. NCHS Data Brief. 11/2010.
    Nordqvist,  Christian. Fluoride: Uses, Effects and Controversies. Medical News Today. 01/2016.
  8. Albright, JA. The effect of fluoride on the mechanical properties on bone. Transactions of the Annual Meeting of the Orthopedics Research Society. 1978.
  9. Cancer. Fluoride Alert.
  10. Main, Douglas. Water Fluoridation May Increase Risk of Underactive Thyroid Disorder. Newsweek. 02/2015/
  11. Gupta, Amit Raj.Toxic effect of sodium fluoride on hydroxyproline level and expression of collagen-1 gene in rat bone and its amelioration by Tamrindus indicaL. fruit pulp extract. Interdisciplinary Toxicology. 03/2016.
  12. Bassin, Elise Beth. Association Between Fluoride in Drinking Water During Growth and Development and the Incidence of Osteosarcoma for Children and Adolescents. Harvard School of Dental Medicine. 04/2001.
  13. Countries that Fluoridate Their Water. Fluoride Action Network. 08/2012.


Disclaimer: This article may contain affiliate links, which allows you to support our mission (as well as demonstrate market demand for safer products) without costing you extra.

Posted in: Dental Health

6 thoughts on “Is Fluoride Good for Your Teeth? Know the Science & the Risks”

Leave a Comment
  1. Jerry says:

    What is the best water to drink that contains no fluoride? I drink Disani bottled water. Is that bad???? Never drink tap water.

    1. Rose Butler GSG says:

      Fiji water is one of the better ones.

  2. Amy says:

    I remember being told ( so you would need to confirm) that Desani is just bottled tap water. I try to buy the natural spring waters from the area I am in. I’m no fan of Nestle either.

    1. Rose Butler GSG says:

      Fiji water is a good brand.

  3. Joe says:

    You should only drink Reverse Osmosis water, or ideally you should drink Distilled water. There are rumors out there about Distilled water and minerals that should be completely ignored because the rumors come from the same people that put the fluoride poison in your water to begin with. If you have to drink bottled water, I think that the Smart Water brand is Distilled (Glaceau makes it?). Go to fluoridealert.ORG to learn the truth.
    The government bought the domain name fluoridealert.COM to continue the lies about fluoride being a good thing when it’s actually a dangerous toxin. That should tell you enough right there. Why would the US government copy and buy the name ‘fluoridealert.COM’ site unless they had something to hide?
    fluoridealert.ORG is the truth and has over fifty published studies.

  4. Jeff says:

    This article mainly addresses fluoride in water. Is there are any benefit to using a fluoride rinse?

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