When a person has black or dark-colored mucus, they may have inhaled potentially harmful pollutants. Coughing up black mucus may ... the doctor recommend the best course of treatment.

This can cause your phlegm to contain traces of blood. Repeatedly coughing up phlegm often brings small amounts of blood into the mouth and onto the taste buds, leading to a distinct metallic ...

This cold and flu season, you may be looking for clues you're getting better anywhere you can find them, even in the color of ...

chesty cough, and the inevitable mucus and phlegm build-up. However, did you know that mucus production actually helps the lungs by trapping irritants such as dirt and dust, and infectious ...