03/03/2026
Root canal treatment can eliminate tooth infection — and may also improve your body’s metabolic health.
New research from King’s College London shows that successfully treating apical periodontitis — a deep infection at the root of a tooth — is linked to measurable improvements in blood chemistry.
The study, published in the Journal of Translational Medicine, followed patients for two years after endodontic treatment.
The findings were clinically significant.
After successful root canal therapy, patients demonstrated:
• Improved blood sugar control
• Reduced glucose levels
• Healthier cholesterol and fatty acid balance
These changes suggest better metabolic regulation over time.
Why does a tooth infection affect the rest of the body?
Bacteria inside an infected root canal can trigger persistent low-grade inflammation. Inflammatory mediators may enter the bloodstream, contributing to insulin resistance, altered lipid metabolism, and increased cardiovascular risk.
Using advanced metabolomic analysis and spectroscopy, researchers tracked systemic biomarkers. As the dental infection resolved, inflammatory markers declined gradually.
This reinforces the growing evidence connecting oral infection with systemic health.
Root canal treatment is not only a tooth-saving procedure. By removing a chronic source of bacterial inflammation, it may help restore healthier metabolic balance.
The broader implication is clear: oral health and general health are biologically connected.
Managing dental infections promptly may contribute to long-term protection against metabolic and cardiovascular disease.
▪️Source: Zhang, Y., Le Guennec, A., Pussinen, P., Proctor, G., & Niazi, S. A. (2025). Successful endodontic treatment improves glucose and lipid metabolism: a longitudinal metabolomic study. Journal of Translational Medicine.
