A preliminary study presented at the American Heart Association’s (AHA) Basic Cardiovascular Sciences Scientific Sessions 2026 found the gum disease bacterium Porphyromonas gingivalis inside calcified heart valves, according to the presentation.
Researchers at Fuwai Hospital and Peking Union Medical College examined valve tissue removed during valve replacement surgery, the study stated. The findings have not been peer-reviewed, and the valve calcification results were confirmed in animals rather than in people, researchers said. The researchers have begun a clinical study to further evaluate the connection, according to the report.
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