Finnish scientists from the University of Tampere have discovered that bacteria that live in the human mouth may be directly linked to the occurrence of heart attacks, reports Science Alert .
Genetic traces of bacteria in plaques
Researchers examined more than 200 samples of atherosclerotic plaques from patients with coronary heart disease and for the first time found genetic material from oral bacteria in them, supporting the hypothesis that microorganisms may be involved in the formation of dangerous deposits in the arteries.
Atherosclerosis is caused by the buildup of fatty and cholesterol plaques on the walls of arteries, which narrows the blood vessels and can block blood flow to the heart. It is the rupture of such plaques that often causes a heart attack.
Streptococci and the risk of death
In 42% of samples taken from both patients who died suddenly and those who underwent surgery, the scientists found bacterial biofilms. Most often, these were greenish streptococci, microorganisms known to inhabit the oral cavity.
Their presence has been linked to severe forms of atherosclerosis and an increased risk of death from heart disease. In the event of inflammation, these bacteria can contribute to the rupture of plaque, which triggers the mechanism of a heart attack.
Why oral hygiene is important
Scientists emphasize that although more research is needed, it is already clear that the condition of teeth and gums directly affects heart health. Regular oral hygiene and timely treatment of dental problems can reduce the risk of cardiovascular disease.
This discovery adds another argument in favor of a comprehensive approach to heart attack prevention — along with physical activity, proper nutrition, and cholesterol control.
