The bacteria behind gum disease may also harm your heart valves, early research suggests

July 20, 2026 - 23:29

A common bacterium responsible for gum disease may also play a role in damaging heart valves, according to early research. Scientists have found that the pathogen can trigger an inflammatory response that leads to calcium deposits on the valves, potentially contributing to a serious condition known as aortic valve stenosis.

The study, presented at a recent cardiology conference, examined tissue samples from patients undergoing heart valve surgery. Researchers detected the presence of the oral bacterium in a significant number of the samples. The bacteria appear to activate immune cells that promote calcification, a process where calcium hardens and stiffens the valve tissue. Over time, this narrowing of the valve restricts blood flow from the heart, causing symptoms like chest pain, shortness of breath, and fatigue.

While the findings are preliminary, they add to a growing body of evidence linking oral health to cardiovascular disease. The researchers emphasized that the study does not prove causation, but it suggests a plausible biological mechanism. Poor dental hygiene allows the bacteria to enter the bloodstream through bleeding gums, where it can travel to the heart.

Experts recommend maintaining good oral care as a simple preventive measure. Regular brushing, flossing, and dental checkups may reduce the risk of both gum disease and potential heart complications. Further research is needed to confirm the connection and explore whether treating gum disease could lower the risk of valve disease. The study highlights the importance of the mouth-heart link, urging people not to ignore bleeding gums or persistent bad breath.