why do i taste blood in my mouth

Tasting blood in the mouth can have various causes, most commonly related to oral health issues like gum bleeding from brushing too hard or gingivitis (gum inflammation). Other frequent causes include nosebleeds where blood drips into the mouth, use of iron or mineral supplements, certain medications, sinus infections, mild trauma inside the mouth, or simply a metallic taste linked to minor bleeding or irritation. Specifically, poor oral hygiene or gingivitis can cause gums to bleed and produce a blood taste. Some medications and supplements, especially those containing iron, copper, or zinc, can create a metallic or blood-like taste. Nosebleeds and sinus infections can also cause this symptom when blood or mucus drains into the throat. Furthermore, exercise-induced breakdown of red blood cells may cause a blood taste without visible bleeding. Infections like tuberculosis or COVID-19 might alter taste sensations to include a blood or metallic taste. Rarely, central nervous system issues or ear surgery might cause altered taste sensations. If the blood taste persists or is accompanied by other symptoms, consulting a healthcare provider or dentist is advisable to identify and treat the underlying cause.