17/10/2026
Regular flossing is linked to a lower risk of ischemic stroke and atrial fibrillation, according to a long-term U.S. study published in Stroke in 2026.
Researchers analyzed data from approximately 6,200 adults in the Atherosclerosis Risk in Communities (ARIC) study, followed for a median of 23.7 years. Compared with people who did not floss, those who reported regular flossing had a 23% lower risk of ischemic stroke, a 40% lower risk of cardioembolic stroke, and a 12% lower risk of atrial fibrillation.
Flossing removes plaque and food debris from between teeth, helping maintain gum health. Researchers suggest that reducing oral inflammation may contribute to cardiovascular health, although the mechanisms linking oral health to stroke risk are not yet fully established.
Important: This was an observational study based on self-reported flossing. It shows an association, not proof that flossing prevents stroke.
Research reference: Sen et al. Stroke. 2026;57(5):1273–1282. DOI: 10.1161/STROKEAHA.125.054440.