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You probably know that mercury, lead, and other heavy metals should not nice for the physique and may trigger a number of points. However whether or not or not fluoride is secure (or efficient) is extra controversial.

Is Fluoride Useful?

Within the early a part of the 20 th century, it was found that small communities who had larger ranges of naturally occurring fluoride of their ingesting water had fewer dental caries (cavities). Naturally fluoridated water at about 1mg/L gave the impression to be helpful to dental well being. (Fluoride that’s naturally occurring is calcium fluoride.)

Sadly, the fluoride that’s typically added to water provides within the U.S. is hydrofluoric acid (an industrial by-product), not elemental fluorine or calcium fluoride. It’s well-known that naturally occurring substances (even heavy metals) are usually higher tolerated by the physique than artificial counterparts.

However as a result of early research confirmed few dental caries in communities utilizing fluoridated water, fluoridated water grew to become often called considered one of 10 finest public well being achievements of the 20 th century based on the Middle for Illness Management (CDC).

Nonetheless, rates of dental caries have been going down for all western nations, each utilizing fluoridation and never, suggesting that there isn’t any connection between fluoridated water and fewer cavities.

For instance, Sweden doesn’t fluoridate its water and has the identical quantity of dental caries as america. Nobel Prize Winner Dr. Arvid Carlsson argued in opposition to its use in Sweden by saying that topical use of fluoride may match for dental caries however ingesting fluoride was not a good suggestion, particularly when you think about that the quantity any particular person consumes can range fairly a bit.

Although some earlier research confirmed that fluoride within the water provide might help scale back dental caries, a 2015 Cochrane assessment discovered that the latest and complete proof reveals that there’s merely not sufficient proof to help fluoridating water.

Although fluoride might assist stop cavities when used topically, there are different (higher) methods to enhance oral well being with out fluoride.

Sources of Fluoride

Fluoridated water is an apparent supply of fluoride however there are lots of others as effectively. As a result of there are such a lot of sources of fluoride at present, it’s particularly regarding that water provides are “spiked” with fluoride. Listed below are a few of the main sources of fluoride:

  • Packaged meals and drinks (made with fluoridated water)
  • Pesticides
  • Tea (the plant naturally absorbs fluoride; natural teas are advantageous)
  • Teflon pans
  • Mechanically separated meat (fragments of bone may be left behind)
  • Business (aluminum, fertilizer, iron, oil refining, semi-conductor, and metal industries)
  • Fluorinated prescription drugs (the fluorine doesn’t normally break down into fluoride, however might)
  • Dental merchandise

In fact, there are causes apart from fluoride to keep away from a few of the issues on this listing. For somebody who’s occupied with pure well being (and avoiding lots of this stuff already), avoiding fluoride isn’t all that tough.

How Fluoride Impacts the Thyroid

Although there may be some debate about whether or not fluoride is secure, the proof is fairly clear that it may have an effect on thyroid perform, and for anybody in danger to start with (many women are), fluoride is probably harmful. Contemplating thyroid illness impacts 20 million People (largely ladies), this is a crucial angle to think about.

Within the Thirties a product containing fluoride was used to deal with individuals with hyperthyroidism (overactive thyroid). The fluoride poisoned the enzymes within the thyroid gland and slowed down the manufacturing of thyroid hormones. This drug stopped getting used as a result of some individuals’s thyroid glands have been completely broken from its use.

Research present that fluoride impacts the thyroid gland particularly. Research executed in India discovered that youngsters in communities with excessive fluoride consumption had a big lower in thyroid-stimulating hormone (TSH). One other examine discovered that folks with unfluoridated water have been much less prone to develop hypothyroidism.

Fluoride and Iodine

Fluoride can result in thyroid irritation and autoimmune thyroid illness (like Hashimoto’s). Fluoride can be an endocrine disruptor. Dr. Izabella Wentz explains in this post the way it’s misidentified as iodine within the physique so it’s taken up into the physique and saved in physique tissues the way in which iodine needs to be.

One examine discovered that iodine ranges instantly influence how a lot hurt fluoride can do to the thyroid and should assist defend the thyroid from fluoride. Alternatively, many individuals who’ve thyroid illness like Hashimoto’s have low ranges of iodine however can’t tolerate supplemental iodine both. In these instances, fluoride is particularly problematic.

How Fluoride Impacts the Skeletal System

Fluoride can be pretty clearly implicated in bone well being points. Although supporters of fluoride declare that it may assist enhance bone density, proof reveals that the quantity of fluoride performs a vital half in whether or not fluoride helps or hurts bone well being.

This study checked out completely different populations in China with various ranges of naturally occurring fluoride within the water starting from 0.25 mg/L to 7.97 mg/L (as a comparability, locations that add fluoride to water usually add to .7-1 mg/L). What the examine discovered was that fractures occurred much less when fluoride ranges have been at about 1 mg/L however extra after they have been on the bottom and highest elements of the vary. Clearly, there’s a advantageous line between useful and dangerous right here.

Skeletal fluorosis is a severe bone illness which causes hardening and thickening of the bones which makes motion tough. It may be confused with various different skeletal points together with arthritis. Skeletal fluorosis is brought on by extreme publicity to fluoride which may occur over time as fluoride can accumulate within the physique. The most recent research reveals that early indicators of skeletal fluorosis can happen with as little as 6 mg of fluoride a day (a lot much less for these with kidney illness).

The Upside

Having good well being to start with, notably regular ranges of nutritional vitamins and minerals, might help scale back the destructive results of fluoride. One examine discovered that ordinary ranges of calcium helped stop fluoride-induced bone points in rats. One other discovered that ample ranges of vitamin D may very well be protecting. Moreover, one other examine discovered that magnesium-deficient rats absorbed extra fluoride than rats with regular magnesium ranges and in addition had extra fluoride of their bones and tooth.

What does this imply? That we are able to do one thing about fluoride publicity by doing a few of the similar issues which might be good for well being total. Optimizing calcium, vitamin D, and magnesium ranges (here are some ideas on that) and consuming a nutrient-dense weight-reduction plan is a good first step.

Fluoride and the Mind

Fluoride is a confirmed neurotoxin and lots of prestigious critiques have dug into the analysis that’s accessible on the subject over time. A 2012 Harvard assessment discovered that of the 27 research within the assessment, 26 of them concluded that there’s a relationship between elevated fluoride and decreased IQ.

A 2014 Lancet assessment paperwork fluoride as a neurotoxin that may very well be dangerous to youngster growth. The assessment concludes, “The presumption that new chemical substances and applied sciences are secure till confirmed in any other case is a elementary drawback.”

Newer analysis is discovering the identical neurotoxicity issues as earlier research. A 2017 examine discovered that fluoride publicity in utero was linked to poorer cognitive efficiency later in life.

Fluoride Impacts Different Components of the Physique

Whereas the results of fluoride on the thyroid, skeletal system, and mind is pretty clear lower, the science is much less clear on how fluoride impacts different elements of the physique. Listed below are another methods fluoride might trigger hurt:

  • Most cancers – A connection between fluoride and most cancers is a hotly debated subject, in all probability as a result of the analysis is inconclusive and at occasions complicated.
  • Early sexual growth – One researcher discovered that fluoride accumulates in excessive quantities within the pineal gland (that secretes hormones). A 1997 examine discovered that fluoride was related to sooner sexual growth within the feminine gerbils within the examine.
  • Male infertility – Some knowledge recommend {that a} decline in male fertility may very well be related to topical fluoride use. Animal research present concern however extra data is required.

So… Ought to I Be Apprehensive About Fluoride?

There are a lot of conflicting opinions on whether or not fluoride is secure and whether or not it’s one thing to fret about. (I do know, you hear me say issues like that lots!) Mark Sisson’s opinion on it’s that fluoride isn’t nice however that we must always concentrate on enhancing well being in different methods first (clear weight-reduction plan, loads of sleep, low stress, and so on) earlier than worrying about filtering fluoride from the water. Alternatively, in case you are filtering your water due to any variety of the opposite pollution that may very well be in it, it’s possible you’ll as effectively filter out fluoride too.

There’s proof on both facet of the talk. My private stance is that for individuals with thyroid points (like me) it’s clearly finest to keep away from fluoride. And since fluoride does include a warning to name the poison management middle instantly if ingested (and after seeing an in depth buddy’s scare when her son ingested some fluoride), I purchase unfluoridated toothpaste and don’t preserve fluoride-containing merchandise round our home.

Easy methods to Shield Tooth With out Fluoride

Although fluoride might have a protecting impact on tooth, there are different (higher) methods to maintain tooth wholesome than to smear them with fluoride.

Dental Eating regimen

What you eat can influence your oral well being much more than brushing or flossing. Tooth are in a continuing state of remineralization because the saliva within the mouth supplies minerals to the tooth and the cells within the tooth use these minerals to strengthen themselves.

Eating regimen can play an enormous half on this course of (and the well being of your tooth). In response to Weston A. Worth’s (and others) analysis, a weight-reduction plan wealthy in wholesome fat, nutritional vitamins, and minerals might help heal and defend oral well being. I’m going into extra element in this post.

Balancing Hormones

Hormones can have an enormous impact on oral well being as they will management the acid/alkaline steadiness within the mouth. Additionally they have an effect on how effectively the physique can heal from or battle illness. Many people have signs of hormone imbalance and issues like optimizing sleep, stress, weight-reduction plan, and health could make a big difference in hormone health (and oral well being).

Home made Toothpaste

Many standard sorts of toothpaste include chemical substances and synthetic components that may do extra hurt than good! That’s why I began making my own remineralizing toothpaste. I’ve been utilizing it for years and have had no new cavities (and have even healed some that have been ready for a filling).

Fluoride-Free Toothpaste

In fact making your personal toothpaste isn’t at all times sensible when life will get busy, so I created my very own line of non-public care merchandise based mostly on my DIY recipes. It’s referred to as Wellnesse and my Whitening Toothpaste is fluoride-free (however fights micro organism and decay with inexperienced tea leaf extract as an alternative!).

Fluoride: Backside Line

There’s numerous conflicting proof surrounding fluoride and fluoridating water. Some businesses and dentists assume fluoride use has been an enormous well being development. However there’s additionally rising proof that fluoride may be dangerous. I prefer to go on the facet of warning (particularly when there are pure methods to enhance oral well being) and keep away from it. We use a water filter that removes fluoride as effectively.

This text was medically reviewed by Dr. Scott Soerries, MD, Household Doctor and Medical Director of SteadyMD. As at all times, this isn’t private medical recommendation and we advocate that you just discuss along with your physician.

This text was medically reviewed by Dr. Terry Wahls, a scientific professor of medication and scientific analysis and has revealed over 60 peer-reviewed scientific abstracts, posters, and papers. As at all times, this isn’t private medical recommendation and we advocate that you just discuss along with your physician.

Do you employ fluoride? Why or why not?


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  6. Impression of fluoride on neurological growth in youngsters. (2014, December 22).
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