YES, BOOGERS AND mucus are gross. But, they serve a very useful purpose. The thick, sludgy substance—made up of mostly water, salt, and antibodies—is designed to help capture and clear bacteria and ...

It is not unusual to cough up phlegm with a common cold. However, it can also indicate a different, sometimes serious, underlying condition such as stomach acid reflux, lung disease, or heart disease.

Mucus is a thin, slippery fluid that lines the nose, throat, and other passages to trap dust and germs. Phlegm is a thicker type of mucus produced in the lungs to catch and remove harmful particles ...

It’s never any fun feeling under the weather, but when a common cold is paired with excess phlegm, it makes matters even worse. This can lead to irritating symptoms, such as coughing, a sore throat, ...

Struggling through a nasty round of bronchitis with little better to do than binge watch Netflix and feel epically sorry for myself, I pondered the ageless cold-and-flu-season question: Phlegm. Why?

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 ...

Phlegm color can indicate underlying health issues. Clear or white may signal allergies or viral infections. Yellow or green suggests bacterial infection, needing prompt antibiotic treatment. Red ...