Story perspectives

Study Links Dormant Bacteria to Heart Attack Risk

9/9/2025

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Summary

Story summary

Researchers from Finland and the UK discovered dormant bacterial biofilms in arterial plaques may trigger heart attacks.
Viridans streptococci, common mouth bacteria, can evade the immune system and antibiotics.
Activated bacteria cause inflammation, leading to plaque rupture and heart attack risk.
Tissue samples from cardiac death victims confirmed the presence of these bacteria.
Findings may inform new prevention strategies, including potential vaccines against heart disease.

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Story summary

Researchers from Finland and the UK discovered dormant bacterial biofilms in arterial plaques may trigger heart attacks.
Viridans streptococci, common mouth bacteria, can evade the immune system and antibiotics.
Activated bacteria cause inflammation, leading to plaque rupture and heart attack risk.
Tissue samples from cardiac death victims confirmed the presence of these bacteria.
Findings may inform new prevention strategies, including potential vaccines against heart disease.