Heart rhythm disorder traced to bacterium lurking in our gums

Low-Res_P gingivalis-mouse model-periodontitis and atrial fibrillation connection study

Source: Courtesy of Shunsuke Miyauchi/Hiroshima University

A new study finds that a gum disease bacterium can slip into the bloodstream and infiltrate the heart. There, it drives scar tissue buildup—known as fibrosis—distorting the heart’s architecture, interfering with electrical signals, and raising the risk of atrial fibrillation (AFib).

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