People who floss their teeth at least once a week are reducing their risk of stroke caused by a blood clot, researchers are scheduled to report Wednesday.

Flossing at least once a week may lower the risk of stroke and atrial fibrillation, according to preliminary results from a new study. Flossing was linked to improved overall health, including lower blood pressure, healthier cholesterol levels, and a reduced risk of diabetes.

Flossing your teeth at least once a week may be linked to a lower risk of stroke caused by a blood clot blocking brain blood flow and irregular heartbeats, according to a preliminary study presented at the American Stroke Association's International Stroke Conference 2025,