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Vegan Diets and Your Teeth: What's at Stake

Vegan Diets and Your Teeth: What’s at Stake

best dentist pasadena caThere’s no doubt about it. A vegan or vegetarian diet can have powerful benefits for your health. But for your teeth? Well, that’s a different story.

A study published by The American Journal of Clinical Nutrition found that vegetarians are much more likely to suffer from tooth decay, more acidic salivary (spit) pH levels, and lower stimulated saliva flow than non-vegetarians.

Backs Up Previous Research

This study confirms earlier research by Dr. Weston A. Price published in his book Nutrition and Physical Degeneration. After a 10-year examination of isolated societies that were untouched by “the displacing foods of modern commerce,” Price found that indigenous vegetarian cultures suffered tooth decay at a higher rate than omnivore or almost completely carnivore cultures.

Another study titled “Oral Implications of the Vegan Diet” assessed 15 people who had been on a vegan diet for at least 18 months and compared their oral health with 15 people who were on omnivorous diets. The results showed there was a greater incidence of demineralization in the teeth of the vegan group as compared to the omnivores. Saliva pH was also at a more preferable level among the omnivores.

What’s Missing?

Unfortunately, these early studies suggest vegans are much more likely to have poorer dental health than non-vegans.

But, why is that? What’s it that’s missing from vegan and vegetarian diets that is leading to this tooth decay?

The answer: People are not getting enough vitamin D and calcium.

Vegan Sources of Vitamin D

Most Americans get vitamin D from the sun, fortified milk, and fortified margarine. Food sources for vitamin D include fatty fish (cod liver oil, mackerel, salmon, sardines), eggs (if the chickens have been fed vitamin D), and mushrooms (if treated with UV rays).

For vegans looking for vitamin D from food, you’re probably going to need supplements, at least during the fall and winter. Check the labels carefully, as some of the ingredients in the supplements may be derived from animals: Vitamin D2 and vitamin D3 from lichen are vegan-friendly.

Vegan Sources of Calcium

Dairy and fish are great ways to get calcium. If you’re not vegan. So what are your options if you are vegan?

Here’s a list of high-calcium vegan foods:

  • Calcium-fortified soy or nut milks
  • Tofu
  • Soybeans and soy nuts
  • Bok choy
  • Broccoli
  • Collard greens
  • Chinese cabbage
  • Kale
  • Mustard greens
  • Okra

Want to learn more?

Talk to us about your diet. Let us know if you’re a vegan or vegetarian. We’d be happy to make recommendations to keep you on the path to your healthiest smile.


THE SCIENCE OF SMILES® offers affordable cosmetic and laser dentistry and gentle, compassionate general dental care in Pasadena, CA. Our office is conveniently located with extended hours to meet your needs. At THE SCIENCE OF SMILES®, we provide most dental services, from basic preventative care and general dentistry to specialized procedures and complete dental reconstruction. Patient satisfaction is our top priority and we strive to provide the exceptional, affordable dental care and personal touch that lead to lasting relationships. A smiling patient is our greatest reward and we look forward to keeping those smiles healthy, beautiful, and bright. Discover affordable up-to-date dentistry and a team who truly cares at THE SCIENCE OF SMILES®.