Medically Reviewed by Evans P. Holland, MD

Dr. Evans Holland, a cardiologist with McLeod Health, explains the surprising connection between your teeth and heart disease.

Oral health is often seen as a cosmetic concern, but the state of your mouth may have far-reaching effects on your overall health—particularly your heart.

In general, oral health and heart disease are connected by the spread of bacteria – and other germs – from your mouth to other parts of your body through the blood stream and the resulting inflammation.

Gum disease, which includes gingivitis and periodontitis, is caused by the buildup of plaque and bacteria on the teeth and gums. When left untreated, this infection can lead to swollen, bleeding gums and damage to the tissues that support the teeth. And that infection doesn’t stay confined to the mouth—it can spread through the bloodstream.  This can result in illnesses such as endocarditis, an infection of the inner lining of the heart, according to Mayo Clinic.

Other cardiovascular conditions such as atherosclerosis (clogged arteries) and stroke have also been linked to inflammation caused by oral bacteria, according to the American Heart Association.

Chronic inflammation is a well-known risk factor for heart disease, as it can contribute to the narrowing of the arteries and the formation of blood clots, both of which can increase the likelihood of heart attacks or strokes.

In addition to the direct effects of oral health on heart disease, there are also shared risk factors between the two. For example, individuals who smoke or have poor dietary habits are at a higher risk for both gum disease and cardiovascular issues. Diabetes, another risk factor for heart disease, is also linked to gum disease, as high blood sugar levels can weaken the immune system, making it harder for the body to fight off infections, including those in the mouth. By managing risk factors like smoking, poor diet, and diabetes, individuals can reduce their risk of both oral health issues and heart disease.

While the connection between oral health and heart disease is still being explored, the evidence is clear: taking care of your teeth and gums can have a significant impact on your overall health, including your cardiovascular system. So, the next time you brush your teeth, remember that you’re not just caring for your smile—you’re also caring for your heart.

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