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 ...

When a person has black or dark-colored mucus, they may have inhaled potentially harmful pollutants. Coughing up black mucus may also be due to an underlying infection or condition. Mucus serves ...

But he also stressed that there is no evidence that swallowing mucus you cough up harms your stomach or intestines. If you go this route, “it will be eliminated through the gastrointestinal ...

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 ...