Flossing may significantly reduce the risk of cardiovascular disease, including stroke and atrial fibrillation (AFib), according to new research presented at the American Stroke Association's International Stroke Conference 2025.

Research findings show that regular flossers experience:

• 22% lower risk of ischemic stroke
• 44% lower risk of cardioembolic stroke
• 12% lower risk of atrial fibrillation

The study analyzed data from over 6,000 participants over 25 years, with 65% reporting regular flossing habits. The connection between oral health and cardiovascular health appears to be linked to inflammation reduction.

Recent research also identified a connection between the bacteria Streptococcus anginosus, commonly found in oral and gut microbiota, and increased stroke risk. Higher levels of this bacteria were found in stroke survivors, suggesting it could serve as a potential biomarker for stroke risk.

To reduce cardiovascular disease risk, the American Heart Association recommends:

• Eating a healthy diet
• Being physically active
• Quitting tobacco
• Getting adequate sleep
• Managing weight
• Controlling cholesterol
• Managing blood sugar
• Maintaining healthy blood pressure

Flossing represents a simple, cost-effective addition to daily routines that may help prevent cardiovascular disease. Combined with other healthy lifestyle choices, it could contribute to reducing the risk of stroke and AFib, which remain leading causes of death in the United States.

Dr. Souvik Sen, chair of the Department of Neurology at Prisma Health Richland Hospital, emphasizes that flossing could be an accessible and inexpensive health behavior to help prevent stroke, particularly when combined with other preventive measures.

Related Articles

Previous Articles