CHEST infections are not out of the norm for this time of year – but sometimes the symptoms could be a sign of something more ...

Jassey, DOCoughing up thick, green mucus may mean a bacterial or, less often, viral infection, but that's not always true.

If you’ve ever fought a cold or infection in the past, chances are you’ve had the not-so-pleasant experience of coughing up ...

A higher-than-normal amount of phlegm can build up in your nose, throat, and lungs when you are sick. This build-up may cause coughing and discomfort. Bloody, brown, white, yellow, or green phlegm ...

The sticky, slimy goo plays an essential role in fighting off infections, shaping the gut microbiome and more.