Good oral hygiene is widely recognized for its role in maintaining healthy teeth and gums, but emerging research suggests it may also help prevent serious cardiovascular issues. A recent study found that flossing at least once a week can significantly lower the risk of stroke caused by blood clots and irregular heartbeats. While brushing and regular dentist visits are essential, flossing appears to have a unique impact on reducing inflammation and improving overall vascular health.
Key Takeaways
New research indicates that flossing at least once a week can significantly reduce the risk of stroke and other cardiovascular issues.
- Flossing once a week lowers the risk of ischemic stroke by 22% and cardioembolic stroke by 44%, as well as atrial fibrillation by 12%
- Poor oral hygiene, such as gum disease caused by plaque buildup, can lead to inflammation that increases the risk of stroke and other vascular diseases.
- Experts recommend incorporating flossing into a daily routine for optimal benefits, alongside regular brushing and dental checkups.
How flossing lowers stroke risk
A study led by Dr. Souvik Sen from the University of South Carolina School of Medicine analyzed data from over 6,000 participants enrolled in the Atherosclerosis Risk in Communities (ARIC) study. Over a 25-year period, researchers examined the effects of oral hygiene habits, including brushing, flossing, and routine dental visits, on cardiovascular health.
Flossing once a week may lower stroke and heart-related risks. The study found a 22% reduction in ischemic stroke, caused by blocked blood flow to the brain. It also showed a 44% lower risk of cardioembolic stroke, where a clot forms in the heart and travels to the brain. Additionally, flossing was linked to a 12% decrease in atrial fibrillation (AFib), an irregular heartbeat that raises stroke risk. These findings suggest flossing supports heart and brain health.
These findings were independent of other oral hygiene behaviors, meaning that flossing alone had a significant effect on stroke prevention, even for those who brushed regularly and visited the dentist.
Connection between oral health and heart disease
Poor oral hygiene can lead to gum disease, a condition that affects nearly 3.5 billion people worldwide, according to the World Health Organization. When plaque and bacteria accumulate between the teeth, they trigger inflammation in the gums, allowing harmful bacteria to enter the bloodstream. This inflammation can contribute to arterial plaque buildup, increasing the risk of stroke and other vascular diseases.
Dr. William Shutze, a vascular surgeon and officer of the Society for Vascular Surgery, explains that the bacteria from gum infections can travel to the brain or bloodstream, potentially leading to blood clots. Chronic gum disease has also been linked to heart attacks, high blood pressure, and other serious cardiovascular issues.
The study’s findings align with previous research showing that inflammation plays a key role in stroke risk. While more studies are needed to establish a direct cause-and-effect relationship, the evidence suggests that maintaining good oral hygiene—particularly through flossing—can help protect vascular health.
Oral and heart health tips
To maximize the benefits of flossing, experts recommend incorporating it into a daily routine rather than treating it as an occasional habit.
Choosing the right flossing method: Dr. Fatima Khan, co-founder of Riven Oral Care, suggests using traditional dental floss along with a water flosser for optimal plaque removal. The American Academy of Periodontology also supports this approach, noting that water flossers can help remove bacteria from hard-to-reach areas.
When to floss and brush: Research indicates that flossing before brushing may be the most effective way to remove plaque and bacteria. Dr. Randy Kunik, an orthodontist and founder of Kunik Orthodontics, advises brushing twice a day with fluoride toothpaste and using a soft-bristled toothbrush to avoid damaging enamel.
Dietary and lifestyle adjustments: A healthy diet also plays a crucial role in oral and cardiovascular health. Reducing sugary foods and drinks can limit bacterial growth, while eating crunchy fruits and vegetables like apples and carrots naturally helps clean teeth and promote saliva production. Regular dental checkups ensure early detection of potential issues before they develop into serious health concerns.
The bigger picture
With over 795,000 strokes occurring annually in the U.S., simple lifestyle changes can have a major impact on prevention. While flossing is not a cure-all, it is an accessible, affordable, and easy habit that contributes to both oral and cardiovascular health. When paired with proper brushing, a healthy diet, and routine dental checkups, flossing can play a vital role in preventing serious health conditions.
