Can Flossing Protect Your Heart? New Study Reveals a Strong Link

While it may surprise you, taking care of your teeth can lower your risk of serious cardiovascular issues. A new long-term study suggests that regular flossing may reduce the chances of developing heart disease, atrial fibrillation (AFib), and stroke caused by blood clots.

Heart and vascular diseases remain leading causes of death worldwide. They’re often linked to poor diet, lack of exercise, smoking, and chronic stress.

In a 25-year study involving more than 6,000 participants, researchers found that people who used dental floss regularly had a 22% lower risk of ischemic stroke and a 44% lower risk of cardioembolic stroke, compared to those who didn’t floss at all. Additionally, the risk of developing atrial fibrillation was also lower among flossers.

What’s the Link Between Your Gums and Your Heart?

The connection likely lies in chronic inflammation. Ongoing gum disease can affect the blood vessels and may contribute to the development of atherosclerosis (plaque buildup in the arteries). Scientists believe that harmful bacteria from the mouth can enter the bloodstream, triggering inflammation and increasing the likelihood of blood clots.

Findings presented at the American Stroke Association conference also pointed to a higher presence of streptococcus bacteria — common in both the mouth and gut — in stroke survivors, reinforcing the theory that oral bacteria may elevate the risk of brain-related events.

A Simple Habit with Long-Term Impact

Good oral hygiene is a low-cost, easy way to support overall health. The American Heart Association recommends a balanced diet, regular exercise, avoiding smoking, sufficient sleep, and proper management of cholesterol and blood pressure. Adding consistent brushing and flossing to that list may be a powerful extra step in protecting your heart for years to come.