Medically reviewed by Amelia MacIntyre, DO Smoking can lead to brown mucus due to tar build-up in the lungs. Inhaling pollutants and toxins can cause brown mucus. Lung infections from bacteria and ...

Medically reviewed by Jonathan B. Jassey, DO Green mucus can be a sign of a bacterial or viral infection, but not always.You ...

Once you understand what's behind your cough, choosing the right treatment becomes much easier.

Managing mucus from COPD involves strategies that can help loosen mucus and clear it from your airway, such as staying ...

Coughing is a reflex that typically serves as a defense mechanism to clear the airways of irritants or secretions. (Fun fact: Coughs can propel air and particles out of the lungs and throat at speeds ...

Phoebe Williams receives funding from the National Health and Medical Research Council, the Medical Research Future Fund, and the Gates Foundation. Niall Johnston does not work for, consult, own ...

Q: I am continuously bothered by mucus or phlegm in my throat. I have a hard time swallowing it. Sometimes it seems to cover my throat so I can't breathe. One doctor told me it wasn't anything and ...