Keep reading for more information about what can cause black mucus or phlegm and ways to treat it. Pollutants, infections, and lung cancer may cause black mucus or phlegm. Below, we discuss these ...

Phlegm might seem like an everyday nuisance, but it can serve as a critical indicator of your body’s respiratory and systemic ...

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 particles such as ...

and lungs. It often comes with congestion and a nagging cough. The phlegm, mucus, and discharge from the infection can have a metallic taste that enters your mouth when you cough. The cold is an ...