09/13/2025
Heart attacks may be spreading like an infection.
Researchers have unearthed shocking evidence that challenges everything we thought we knew about heart disease.
A groundbreaking study from Finland and the UK suggests that some heart attacks may be triggered by hidden bacterial infections – not just cholesterol or clogged arteries. Deep inside arterial plaques, researchers found bacterial biofilms: sticky, gelatinous colonies that can lie dormant for decades, protected from the immune system and antibiotics.
Then, something wakes them up.
A viral infection. A major stressor. Once activated, these bacteria trigger inflammation that can rupture the plaque, leading to dangerous clots – and a heart attack.
Scientists detected the genetic fingerprints of oral bacteria inside arterial tissue from patients who had died suddenly, as well as in those undergoing surgery for atherosclerosis. In some cases, they even observed bacteria escaping from the biofilm during a heart attack, with the immune system reacting in real time.
Until now, heart disease was mostly blamed on lifestyle, cholesterol, and high blood pressure. But this new research doesn’t just add to the picture – it might reframe it entirely.
If biofilms play a role in heart attacks, this could open the door to new diagnostics, new treatments, and even vaccines to prevent them.
We may be on the edge of a major shift in how we understand – and prevent _ the world’s deadliest disease.
Read the study:
"Viridans Streptococcal Biofilm Evades Immune Detection and Contributes to Inflammation and Rupture of Atherosclerotic Plaques." Journal of the American Heart Association, 2025
