Discover the four overlooked factors your prescriptions were never designed to address—and why they may still affect how you feel.
Key Takeaways
- Researchers discovered that common mouth bacteria can form hidden colonies, or biofilms, inside the arterial plaques of your heart.
- These bacterial colonies can lie dormant for years, evading your immune system and resisting antibiotics.
- When activated, these bacteria can trigger intense inflammation, potentially causing plaques to rupture and lead to a heart attack.
- The findings suggest that preventing heart attacks may require new strategies that target these bacterial biofilms, in addition to managing cholesterol.
How Mouth Bacteria Reach Your Heart
The bacteria at the center of this discovery, viridans streptococci, are normal inhabitants of your mouth. They are among the first to colonize your teeth and form dental plaque. So, how do they travel from your mouth to your heart? They can slip into your bloodstream during everyday activities like chewing, dental cleanings, or even just brushing your teeth, especially if you have inflamed gums.
While your body usually clears these bacteria from the blood quickly, this study shows they can find a permanent home inside the rough, uneven surfaces of atherosclerotic plaques in your arteries. Once there, they build sophisticated communities called biofilms—protected shields that antibiotics can’t easily penetrate and your immune cells can’t see.