Recent research indicates that consistent flossing may help reduce the chances of experiencing certain types of strokes, as well as irregular heart rhythms that elevate stroke risk. The study’s results will be unveiled at the American Stroke Association’s International Stroke Conference in Los Angeles. According to the findings, individuals who floss at least once a week appear to have a decreased likelihood of strokes caused by blood clots from the heart, along with a reduced incidence of atrial fibrillation, or AFib, which can result in a stroke. These results are preliminary and await publication in a peer-reviewed journal.
Lead researcher Dr. Souvik Sen, a neurology professor at the University of South Carolina in Columbia, emphasized that while flossing shouldn’t be viewed as the sole preventative measure against strokes, it certainly adds to a holistic approach to maintaining good health. Sen noted that previous research has already established correlations between oral health, oral infections, and damage to the brain’s white matter and small blood vessels, along with plaque accumulation in arteries leading to the brain.
The study focused on 6,278 participants who provided information regarding their dental flossing habits. Approximately 65% reported that they floss at least weekly. Over a span of 25 years, researchers monitored these individuals for the development of AFib or ischemic strokes, which occur due to blockages in the blood vessels supplying the brain. They specifically assessed various types of ischemic strokes: thrombotic strokes (which result from clots in large brain arteries), cardioembolic strokes (clots that travel from the heart), and lacunar strokes (clots forming in small deep brain arteries).
The analysis revealed that individuals who flossed regularly had a 22% lower risk of ischemic stroke, a 44% reduced risk of experiencing a cardioembolic stroke, and a 12% lower risk of developing AFib, which affected 20% of those studied. Interestingly, there was no observed association between frequencies of flossing and thrombotic or lacunar strokes.
Dr. Sen remarked, “Flossing diminishes oral infections and gum disease, both of which are associated with inflammation.” Since inflammation is a known risk factor for strokes, it’s plausible that regular flossing might help mitigate this risk. Dr. Karen Furie, who is a neurologist-in-chief at Brown University Health in Rhode Island, expressed that she wasn’t shocked by the findings regarding flossing and stroke risk reduction. She pointed out that flossing effectively removes debris stuck between the teeth that brushing may miss, potentially reducing inflammation which can impact vascular health.
However, Furie found it surprising that the study did not establish a connection between flossing and thrombotic strokes, given their association with inflammation and the buildup of plaque. “I initially believed that this type of stroke would show the greatest reduction,” she noted. It’s plausible that individuals suffering from thrombotic strokes may receive more aggressive management compared to those with sudden cardioembolic strokes.
Furie suggested that the distinction in stroke risk may also relate to the general health management habits of those who floss. The 65% of participants who floss may be more health-conscious and compliant with their healthcare providers’ recommendations compared to the 35% who do not floss. Important preventive measures also include controlling blood pressure and cholesterol levels, maintaining a healthy weight, staying active, following a nutritious diet, and getting enough rest. Furie concluded by reiterating that good dental hygiene plays a significant role in overall health, an aspect that many often overlook. This highlights the importance of oral health as a component of comprehensive health care.
