Researchers link gum disease to increased risk of stroke, brain damage

Published: Thursday, October 23, 2025 at 6:21 pm

Gum Disease and Cavities Linked to Increased Stroke Risk, Studies Show

New research published in *Neurology Open Access* highlights a concerning link between oral health and the risk of stroke and brain damage. Two separate studies have found that individuals with gum disease and cavities face a significantly elevated risk of these serious health issues.

The first study revealed that adults with gum disease exhibited a higher likelihood of white matter changes in their brains. These changes are often associated with inflammation, which has been linked to atherosclerosis and the hardening of small blood vessels.

The second study further emphasized the connection, indicating that individuals suffering from both gum disease and cavities had an 86% higher risk of stroke compared to those with healthy teeth and gums. This suggests a synergistic effect, where the presence of both conditions dramatically increases the risk.

However, the research also offers a positive message. The studies found that maintaining good oral hygiene practices, such as daily brushing and flossing, along with regular dental check-ups, was associated with an 81% lower risk of stroke. This underscores the importance of preventative dental care.

While the research does not definitively prove that poor oral health directly causes strokes, it adds to a growing body of evidence suggesting that inflammation in the mouth may play a role in overall heart and brain health. Globally, a staggering 3.5 billion people suffer from gum disease or cavities, highlighting the widespread implications of these findings. In the United States alone, over 795,000 people experience a stroke each year.

BNN's Perspective:

This research underscores the importance of prioritizing oral health as a key component of overall well-being. While more research is always welcome, the findings provide compelling evidence for the potential benefits of preventative dental care. Public health initiatives promoting regular dental check-ups and good oral hygiene practices could have a significant impact on reducing stroke risk and improving overall health outcomes.

Keywords: gum disease, cavities, stroke, brain damage, oral health, inflammation, white matter changes, atherosclerosis, brushing, flossing, dental visits, risk, prevention, health, neurology, research

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