Nobody looks forward to getting a root canal, but new research suggests this common dental procedure might offer surprising cardiovascular advantages.
British researchers discovered that a successful root canal appears to reduce inflammation associated with heart disease and may even lead to improvements in cholesterol and blood sugar levels.
Dr. Sadia Niazi, senior clinical lecturer in endodontology at King’s College London and lead author of the study, emphasized the broader implications: “Root canal treatment doesn’t just improve oral health — it may also help reduce the risk of serious health conditions like diabetes and heart disease.”
She added: “It’s a powerful reminder that oral health is deeply connected to overall health.”
The findings appeared on November 18 in the Journal of Translational Medicine.
Understanding Root Canal Treatment
Root canals become necessary when teeth suffer severe damage or infection. During the procedure, dentists extract the infected or damaged pulp—the soft interior tissue containing nerves and blood vessels. They then clean and shape the tooth’s interior space before sealing it.
The Oral Health-Heart Health Connection
Recent years have seen mounting research demonstrating the close relationship between oral health and cardiovascular wellness. Mouth infections can trigger inflammation throughout the body, particularly affecting the heart, researchers noted in their background materials.
Study Design and Findings
Niazi’s research team monitored the overall health of 65 dental patients from Guy’s and St Thomas’ NHS Foundation Trust for two years following their root canal procedures.
The investigators used specialized blood tests to track changes in molecules and proteins that indicate how the body metabolizes substances like sugar and fat, and how it responds to diseases and treatments.
The team observed improvements in blood sugar metabolism after root canal treatment, with effects substantial enough to potentially help prevent diabetes.
Patients also experienced short-term enhancements in blood cholesterol and fatty acid levels, along with decreased inflammation—all positive indicators for cardiovascular health.
Researchers believe these health improvements stem from the reduction in circulating bacteria (and the associated inflammation) achieved through the root canal procedure.
Why This Matters
Niazi explained in a King’s College London news release: “Long-standing root canal infections can allow bacteria to enter the bloodstream, trigger inflammation, and increase blood glucose and fats levels — raising the risk of serious health issues like heart disease and diabetes. It is vital that dental professionals recognize the wider impact of these root canal infections and advocate for early diagnosis and treatment.”
A Call for Integrated Care
Given the strong connections between oral health and overall wellness, Niazi believes dental professionals and other medical specialists should work together more closely to coordinate patient care.
This research adds to growing evidence that maintaining oral health isn’t just about preserving your smile—it may be an important factor in protecting your heart and metabolic health as well.