The Cavity-Reversing Diet: Real Food and Supplements Can Build Stronger, Healthier Teeth

Cavity reversing diet


A filling isn’t the only way to take care of a cavity, but the over $100 billion U.S. Dental Health Industry would like you to believe you have no choice. Either that, or they just don’t know any better.

  • Brush.
  • Floss.
  • Use fluoride toothpaste.
  • Don’t snack on crackers or suck hard candy all day.
  • If sugar still eats a hole in our tooth, get a filling.

This is the protocol for dental health that’s been drilled into us since we were children. The dentist is the authority, so he knows what’s best, right? Maybe not.


Dr. Weston Price wasn’t satisfied with the status quo. He spent most of his career researching cutting-edge dental techniques, and became interested in the link between nutrition and cavities in the early 1900’s.

By the 1930’s, Dr. Price developed his theory that our industrial diet caused cavities.

He travelled all over the globe studying various cultures, from tribal communities to kids in impoverished cities. After conducting some controlled experiments, he came to this shocking conclusion: nutritional deficiency causes cavities, and proper nutrition can heal them.

Just to back that up a little, one of Dr. Price’s successors published research showing that yeah, bacteria can instigate cavities… but healthy teeth will resist indefinitely!


A healthy, nourished body sends signals to the parotid gland to remineralize teeth. Contrary to popular belief, our bodies push toward health, not disease. Yet, 90% of American adults live with 45% of their teeth in decay… and that number just gets bigger as you get older.

Do you really believe that all these adults don’t know how to brush, floss, and use fluoride? Are they all sucking on Jolly Ranchers all day? We are lead to believe that if we take good care of our teeth by way of the brush-floss-rinse protocol, our teeth will be healthy…but they’re not!

There is a fundamental problem in this thought-process. We can scrape away plaque all we want, but an unhealthy, malnourished tooth is still going to decay! Then what do we do? We plug it up with a filling that stops the rot from spreading, but also blocks nutrients from getting through. Fillings don’t heal teeth: Within 5 – 7 years, that filling will have to be replaced with another filling… or worse, a root canal.


You already know that real food is best for your body, but have you ever stopped to think that teeth are a part of that body? Our modern diet is severely lacking in fat-soluble vitamins A and D, as well as in minerals that are essential for rebuilding tooth enamel and healing dental caries.

Here’s how to take dental health into your own hands:

  • Remove sugar and grains from your diet.
  • Add specific healthy fats.
  • Add essential minerals.
  • Drink bone broth.
  • Watch your teeth heal.

If it’s all about “adding tooth-building foods,” why is the first step taking something away? Well, your dentist is a little bit right, but for the wrong reason. Snacking on sugars and carbs is causing cavities, but not because of bacteria eating at your teeth.

Stop eating grains, refined sugars and fructose, AND limit natural sugars found in really sweet fresh and dried fruits.

Sugar and processed carbohydrates are actually inhibiting the production and absorption of essential fat-soluble vitamins and minerals necessary for bone growth and remineralization.

Proper nutrition with the right balance of essential minerals regulates the parotid gland, which is responsible for our teeth’s ability to remineralize—preventing and healing cavities.


  • Vitamin D: Get it from fermented cod liver oil (not heat processed), oily fish like salmon, mackerel, and sardines, free-range duck eggs, animal blood, suet (beef fat)
  • Vitamin A: Get it from land-animal liver, animal eyes (I didn’t say it wasn’t weird), goat cheese, eggs, pastured butter from spring grass-fed dairy (like Kerrigold or raw local butter, cheeses, and kefir)
  • Phosphorus and calcium: Get it from spring grass-fed milk products (calcium), organ meats, muscle meats, and free-range eggs.
  • Bone Broth: Chicken soup remedy? There’s something to it. By boiling the bones (and organs if you got ‘em), your gut heals and all those incredible nutrients are able to be absorbed and used by your body. (Just remember to leave out the noodles.)

Fermented Cod Liver Oil: The Liquid Dentist?

Ramiel Nagel is the author of the highly acclaimed book Cure Tooth Decay: Heal and Prevent Cavities with Nutrition. For an all-out attack on troubled teeth, he recommends taking Fermented Cod Liver Oil–as little as ½ teaspoon three times a day can alleviate tooth pain in just 24 hours, and then effectively heal the tooth.

Here’s the thing—you can’t just take heat-processed cod liver oil from the health food store. That bottle contains no Vitamin D from the cod liver. Instead, it likely has an added synthetic vitamin D that can’t be properly absorbed. Nagel points to Green Pastures Fermented Cod Liver Oil as the best source.


Stop feeling helpless and probed in the dentist’s chair, and take control of your dental health with this simple protocol:

  • Take 1 – 3 teaspoons of the recommended fermented cod liver oil or oil and high vitamin butter oil blend per day.
  • Cut the crap—by that I mean sugar and grains.
  • Add a bit of bone broth, organ meat, and spring grass-fed dairy to your diet.
  • Brush and floss. For gosh sake, we didn’t say we wanted your breath to stink.

It’s time to take responsibility for your dental health. Otherwise, you’ll be caught up in the cycle of eat-cavity-filling-eat-cavity-filling until you have no more tooth structure left and then you can stop worrying, because you’ll get a whole mouth full of fake teeth!

Find out more by checking out the following resources:


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  1. One thing I question… is the need for tooth paste at all. I mean with a good diet, can’t you just scrub your teeth with the brush? Assuming you don’t have breath issues which I think would be more related to diet than anything else.

    • Your mouth will still have bacteria in it and toothpaste can kill the bacteria. IT ALSO HELPS YOUR BREATH.

  2. Nice post. Dental health is one of those weird topics for mainstream dentists that NEVER talk about the diet/tooth connection. It’s insane.

    I took a tour of the Louisville KY Water Company and asked about the fluoridation process. After all the limestone filtration that’s naturally done and the removal of junk, the very last step is for a dump truck or other massive vehicle to bring in truckloads of sodium fluoride and then add it to the water.

    The last step is this.. insane. 20 year studies show no benefit to fluoride. I use either a non-fluoride toothpaste or bentonite clay powders with cinnamon. Delicious.

  3. You forgot one thing. That is drinking mineral water with a 9.5ph or higher can prevent cavities too. I once read a review on Amazon about Essentia water that shocked me a bit. The reviewer claimed that once he started drinking Essentia water his cavities disappeared. I think mineral water neutralizes cavities and helps remineralize teeth too. In fact it probably does it to the whole mouth. I have tried a lot of mineral bottled water and my number one favorite brand is Qure, which is mineral water done right without sodium bicarbonate and other junk added to the water that can cause the water to have a bit of a salty taste that a majority of consumers seem to love.

  4. I once met an older gentleman who swore by liverwurst to give him perfect teeth. He was in his 70s and his teeth had no cavities. He said the combination of fat livers and salt in liverwurst somehow created the perfect ph level to remineralize his teeth. He ate liverwurst almost every day.
    I also remember hearing in some radio show that chicken liver does the same trick. In fact one of the callers on the radio show said chicken liver cured his cavities. I do not remember the name of the radio show now. It was a while back.
    My theory is that liver being an organ meat, and as a major ingredient of liverwurst is what caused him to have good teeth because of the nutrition. I think mineral water (like the above viewer surmised) and liverwurst wraps are probably a good combination to remineralize teeth. That, combined with proper hygiene.
    My favorite liverwurst brand is from grassland beef. They go around $12 a pound and I highly recommend it if you can get it. It gets out of stock pretty quickly. braunschweiger would probably work too in a pinch

  5. I think regular chewing of raw cocoa nibs helps prevent tooth decay. I also think the alkalization caused by the raw cocoa (organic) has a tremendous effect on remineralization . Many cultures apply raw, unfiltered honey directly on cavities. Unlike sugar which makes cavities worse, raw honey applied to cavities directly actually reverses them.
    The trick is to make sure the body stays in an alkaline state. Bee Pollen and bee propoplis applied directly to cavities not only helps remineralize them, but also helps sensitive teeth.
    I think coffee should be taken in moderation, and only coffee that does not contain molds. When you drink coffee, do not drink boiling hot cofee. Instead, let it cook down a bit and then sip and swirl around your mouth (much like wine tasting). The catechins and polyphenols in coffee really help neutralize pain and also help heal cavities

  6. Hi
    Thank you for the article. I would like to share my story. I drank apple cider vinegar mixed with water first thing in the morning for 3 months and it completely cured by cavities. I am now trying rejuvelac. I think rejuvelac really helps remineralize teeth. It is simple and super cheap to make yourself.

    Rejuvelac is a non-alcoholic fermented liquid made from sprouted grains. Because it is fermented, Rejuvelac contains beneficial bacteria and active enzymes, and thus it is reported to improve digestion of food. Rejuvelac can be drunk as a digestive aid or used as a starter culture for other fermented foods such as raw nut and seed yoghurts, cheeses, sauces and Essene Breads. Rejuvelac is prepared using whole wheat, oats, rye, quinoa, barley, millet, buckwheat, rice and other types of grain. Rejuvelac is cloudy, with the colour of pale straw. It has a flavour that is lemony, sharp and slightly tangy, with a mild earthy aroma.

    Rejuvelac is a raw food made by sprouting a grain, soaking the sprouted grain in water for about two days at room temperature, and then reserving the liquid. A second batch can be made from the same sprouts, this time requiring only about one day to ferment. A third batch is possible but the flavor may be disagreeable.[2] The spent sprouted grains are usually discarded. (Preferably via composting or feeding to small animals.)

    It was invented by Ann Wigmore

  7. Great article. I am a big fan of your podcast. As an oral and maxillofacial surgeon in Dallas I certainly was interested in your article. Sugar and processed foods that convert to sugars rapidly is certainly the enemy to all sorts of problems, including teeth. Eating a refined diet has also caused the problems like Dr. Price discovered (jaw misalignment, cavities, impacted wisdom teeth, etc…).

    Remineralization of teeth certainly can occur. Various sugar alcohols such as Xylitol have been show to have an effect. The caveat is that the decay has to be minor. Once the decay reaches through the enamel and into the next surface (dentin) the bacteria have a direct pathway to the nerve and blood vessel. To my knowledge that can not be altered with foods. Usually having severe dental pain will benefit from dental treatment and putting it off makes problems much worse.

    Keep up the great work Abel!

  8. I think magnets help in remineralizing teeth as well. A neighbor of mine had two old speakers that he took apart before discarding and took out the powerful magnets. He placed those magnets on both cheeks around 5 minutes a day. He said his thinking was clearer and suddenly his cavities were filling up like magic. He had not even changed his diet.

    Did Dr Price mention magnets?

  9. I think all of us have the responsibility to search for the answers. With the advent of the internet so many great resources are available at your fingertips.
    What has worked for me in my quest for good health (including healthy teeth) is I spend the time and carefully sift through the tons of information that is out there..
    I always prefer (it is a personal preference) to believe in or listen to experts who are not saddled with the old institutionalized way of thinking.
    For instance, when I go to an expert’s website, i click on the “about” link to know more about the expert. If the person is an MD doctor who has been through 7-10 years of training, I usually tend to avoid them because they have a “set” way of thinking.
    I usually go for experts who are DOs (osteopaths) or NDs (Naturalists). They don’t have the rigorous amount of schooling that regular doctors have to go through, so they have more freedom to search for newer answers that are not necessarily the old ways of doing things.. I also go for experts who do are not products of traditional colleges and universities because they are set in their old ways. I always go for new thoughts.
    I also go for experts who have had a similar situation in their own lives and they took charge and cured it themselves. I think we would have a lot to learn from such experts. For instance, I had thyroid issues, and I found many experts online who had reversed thyroid issues by taking charge and using effective natural remedies. I also had some obesitiy issues and I happened to find a couple who have a website and they conquered obesity by eating lard, organ meats etc.

    More often than not, the supplements needed to conquer these challenges are available on such experts’ websites, which I find very convenient. These experts have a lot of passion and for that reason I tend to trust supplements sold on their websites more.

    The old thought says exercise regularly and eat a balanced diet of whole grains, protein and vegetables. Where has that gotten us? We have the highest population of obese people ever. ANd then look at what these experts have discovered. We are able to eat meat, bacon, butter, fatty coffeee – things that we really like to eat, and actually exercise less, but still be healthy. These experts must be on to something that traditional doctors have missed the train on!!

  10. Great info, and I agree with your recommendations, but would like to add: From what I’ve read (and I’ve read a lot on this topic recently), Dr. Price called what he thought was the main compound in the fermented cod liver oil Activator X, and we now know it as vitamin K2. K2 “directs” calcium where to go or not to go. Such as go to the bones, don’t go to the arteries, don’t go to tartar on the teeth, go into the teeth. (For adults, I think tartar and gum disease are more of an issue than cavities). K2 works with vitamin D and should be taken, especially if one is already supplementing with vitamin D.

    K2 is found in liver, as stated here, and in fats of grass fed animals (including butter). And, unless we have been eating grass fed meat, butter, liver and/or the fermented CLO all our lives, we are deficient. I think it will be very hard for most people to only eat grass fed. And definitely very hard, if not impossible, to come up to the levels of the people Dr. Price was studying just with diet. Realistically, many cannot stomach the cod liver oil, fermented or not. I’m taking K2 supplement myself, in addition to the grass fed meat, butter and liver. Take it with some fat, as it is fat soluble. Also, there is no known toxicity when super-high doses of K2 were tested. Don’t take if on Coumadin or Xarelta.

  11. Great article. Really love it. I was just wondering Abel whether there is any natural toothpaste brand you would recommend or you have some natural ways of making it at home. Thanks a mil.


  12. Yucky as it may sound, cowdung works wonders in reversing cavities. Cowdung is one of the most powerful alkanizers known to mankind
    In some South East Asian countries, people dry cowdung mixed with hay and when it is dry, they bite off small pieces like a wad of chewing tobacco, and place it in the cavity area like chewing tobacco. It works wonders in regrowing enamel and remineralizing teeth

  13. Completely neglecting to mention that ultraviolet light, from the sun or a tanning bed, stimulates the skin to produce Vitamin D in the most direct, natural way possible for the human body. Everything before the point of sunburn is highly beneficial in many other ways too. Can’t recommend sun gazing or general overexposure.

    Also, what’s your thought about oil pulling with coconut oil? I’m still not entirely sure about it.

  14. About oil pulling… My teeth stopped aching when I started swishing oil in my mouth every morning. I dont think that it fills the cavities, though. Coconut oil and especially sesame oil are great for oil pulling, really worth a try if you have issues with teeth or gums!

  15. Great post Abel. Don’t forget oral probiotics as well. Dysbiosis of the mouth can be a real health challenge, not only for the mouth but for the WHOLE body. I’ve highlighted a reference to that study below 🙂

    Koren, O., Spor, A., Felin, J., Fåk, F., Stombaugh, J., Tremaroli, V., et al. (2011). Colloquium Paper: Human oral, gut, and plaque microbiota in patients with atherosclerosis. Proceedings of the National Academy of Sciences, 108(Supplement_1), 4592–4598. doi:10.1073/pnas.1011383107

  16. Right on, Abel ! Great post, great site. Keep up the good work.

    Have you seen the following?
    (with a special note to Anita – K2 is a great nutrient, but it is NOT Activator X)

    The Perfect Teeth of Prehistoric Humans
    Various scholars of prehistory have given us photographs of prehistoric skulls with sets of perfect teeth in place. The degeneration in dental health that has occurred over the many centuries from the hunter-gatherer people to the current American population is truly appalling. Today, an adult with no or few dental problems is a rarity. Are there some dental-care lessons to be found in a study of prehistoric skulls? The following overview of a series of episodes from recent history suggests that the answer is “Yes.”


  17. If you’re remineralizing your teeth, is there any way to drink coffee without blocking the remineralizing process, as in a certain combination of foods to go along with coffee? And, how many hours since drinking coffee is it safe to remineralize effectively if there just isn’t a solution to the first question?

  18. tobias remanify says:

    Rejuvelac! Wow, I hadn’t heard of that ridiculous beverage in about 30 years. This site seems to be a magnet for orthorexia nervosa. (I said *orthorexia*, not anorexia). I remember trying to live for years on such faddish, self-denying, unhealthy extremes. (And I met Ann Wigmore. She was a sweet, spacy old lady who had determined that wheatgrass was life’s elixer by placing cats in front of various grain-blades. They chose wheat. And thousands followed her down her primose path of orthorexia.)

    Now I ask myself why I did all those crazy food behaviors. And I think I know: I was scared to die. And, when I was a lot younger, I suppose on some level I believed that the “right” diet would make me immortal, or forever young, or something like that. And that asceticism with food would lead to emotional and spiritual enlightenment. Maybe it all helped a little. But I was also just plain hungry a lot of the time.

    Life’s a crapshoot. Eat well, yes. But this strange belief that “natural” is necessarily better is an illusion. Eat well – most of the time – and enjoy life. There is no perfect diet, and striving for ever-more-perfect foods and ever-more-obscure “ancient” remedies is a road that leads not to happiness, but to increasing obsession, and, more often than not, isolation.

  19. Thank you for this! I have a couple questions- is red wine okay to drink, or is it at the top of the list of sugar no-nos? And, what’s the harm with one slice of organic, whole wheat bread every day? Without it, I just feel hungry. Lastly, is quinoa good for teeth? Thanks for the help!

  20. Price never recommended fermented CLO, only fresh CLO. While many commercial CLO have synthetic vitamins them, the traditional way of extracting CLO for human consumption was not fermenting. The fermentation process developed as a cheap way of obtaining industrial CLO, not for human consumption. The 1800’s demand for CLO caused the fermented kind to be eaten, but it was never originally intended to be eaten. It’s a product of rotting fish livers, has lower levels of nutrients than real fresh CLO, and is full of toxins. Disgusting! If you want real CLO, google Extra Virgin Cod Liver Oil. Made in the traditional way, whole, fresh, and not heat processed.

  21. We need to stop using any toothpastes with glycerin in them as it coats the teeth with an almost impenetrable layer making mineral delivery via saliva impossible.
    I brush with Kiss my face soap to alleviate this problem

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