A new study has revealed that common oral bacteria may significantly increase the risk of heart disease, highlighting the close link between dental health and cardiovascular health.

Researchers found that bacteria often present in the mouth can embed themselves in the walls of heart arteries, forming a thick protective layer known as a biofilm. This biofilm acts like a fortress, shielding bacteria from both the body’s immune system and the effects of medication.

When the biofilm breaks down, it can cause inflammation in the blood vessels. This weakens artery walls, raising the chances of blood clot formation. A blocked artery can then trigger a heart attack or stroke.

Findings from the finnish study

The research, carried out in Finland, examined tissue samples from people who died of sudden heart attacks as well as from 96 patients who had undergone heart artery surgery.

The study revealed that around 60% of the patients carried viridans streptococci — bacteria commonly found in the human mouth — inside their artery walls.

Experts stressed that the presence of these bacteria was not accidental. Instead, they actively weaken the fatty protective layer inside arteries, making it more prone to rupture and cause life-threatening complications.

Health experts warn that oral hygiene should not be neglected, as poor dental care could directly contribute to cardiovascular diseases.

“Cleaning teeth and gums regularly, along with routine medical check-ups, is essential to lower the risk of heart disease,” the study’s authors advised.