A High Fat, High Protein Diet is Best For Your Teeth


Diet is More Important Than Teeth Brushing


Many dentists believe that tooth decay is driven by a lack of brushing, insufficient fluoride and excess sugar. This is true to an extent - brushing aids oral health, and a diet rich in sugar increases the likelihood of decay. We believe that fluoride does more harm than good to oral health, but that’s not the point of this article. The point of this article is to say that teeth brushing and avoidance of sugar is important, just not as important as following a diet that is high in protein and fat. The best thing you can do to prevent tooth decay and improve your oral health is to change your diet to one that is high in protein and fat.


We frequently see this at our clinic, especially in children whose parents are puzzled as to why their child is prone to tooth decay even if they regularly brush and floss. The driving force behind decay is typically diet - specifically one that is low in protein and fat. This begs the question; how do protein and fat benefit oral health?

How Do Protein and Fat Benefit Oral Health?


A diet rich in protein and fat benefits oral health on several fronts:

  • Carbohydrates and sugar are bad for oral health
  • Sugar affects hormones which lead to decay
  • Fats and protein aid absorption of fat-soluble minerals like vitamin A, D and K2
  • Vitamin K2 promotes the growth of dentin
  • Fats and protein help push calcium into the bone and teeth instead of joints



Sugar and Refined Carbohydrates are Bad for Oral Health


First, it is essential to understand how sugars and refined carbohydrates harm oral health. Carbohydrates and sugar are essentially the same - carbohydrates are converted to glucose (sugar) as the mouth breaks them down. At this point, they begin fermenting in the mouth - resulting in a drop in pH levels which also affects saliva production. Ultimately, carbs convert to sugar and sugar converts to acid, which erodes the teeth and causes decay. A diet high in protein and fat will typically be low in carbohydrates and sugar - thus making the teeth more resistant to decay.

Sugar Affects Hormones Which Reverses Dentinal Fluid Flow


Teeth are made up of three layers; enamel (outer layer), dentin (middle layer) and the pulp chamber (inner layer). Contrary to popular belief, the teeth are not solid, and fluid moves between these three layers. This movement of fluid is known as ‘dentinal fluid transport’. Ideally, dentinal fluid will flow from inside to outside the tooth (starting in the pulp chamber and ending in the mouth). However, a high sugar diet can reverse this fluid flow, causing bacteria and acids to flow into the tooth instead of out of the tooth. When this happens, the teeth are more susceptible to decay.

A diet rich in protein and fat and low in sugar means that dentinal fluid will flow from inside to outside the tooth, thus ensuring the teeth are more resistant to decay. To read more about dentinal fluid transport and how it causes tooth decay, click here.


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Fats and Protein Help Absorb Key Vitamins (A, D and K2)


Vitamin A, vitamin D and vitamin K2 are all essential to the health of the teeth. They are all fat-soluble - meaning they can only be dissolved and absorbed in fat. Thus, a diet rich in protein and fat is essential for the supply and  the absorption of these critical vitamins.

Vitamin K2 Promotes the Growth of Dentin


The formation of dentin (the middle layer of the tooth) is reliant on osteocalcin (a calcium-binding protein). The synthesis and activation of osteocalcin are reliant on vitamin K2. The formation of dentin makes the teeth more resistant to decay. As mentioned above, vitamin K2 is absorbed through fats - highlighting how a diet rich in protein and fat benefits oral health.



Vitamin K2 Improves Density of the Teeth


The primary role of vitamin K2 is to push calcium into the bones and teeth instead of the joints. When calcium is pushed into the teeth, the teeth become denser, making them further resistant to decay. When calcium is deposited into the joints (instead of the bones and teeth), the teeth are weaker and more susceptible to decay.

Improve Your Oral Health With Proper Diet


So you can see how improving oral health is not simply a matter of brushing, flossing and regular trips to the dentist. A properly formulated diet that is high in protein and fat will aid in the defence against tooth decay and will bolster your oral and total body health.