Bleeding gums may be caused by periodontitis, which has an impact on systemic diseases, including heart-related diseases such as infective endocarditis and myocardial infarction, as described below. 1. Periodontitis may have an impact on systemic diseases through mechanisms such as direct infection, spread of bacteria into the blood circulation, and immune response and inflammation of the body caused by periodontal bacteria and their products. 2. For example, in people with rheumatic heart disease or congenital cardiac insufficiency, the entry of bacteria into the bloodstream may trigger infective endocarditis. For example, Porphyromonas gingivalis may prompt platelets to agglomerate in blood vessels, forming blood clots and causing myocardial infarction. There may be other effects of periodontitis on the heart, and it is recommended that you visit a hospital promptly to receive early and regular treatment.