Add Yahoo as a preferred source to see more of our stories on Google. Americans are weathering the worst flu season in years, as a number of other respiratory illnesses circulate too, such as COVID-19 ...

Coughing up white mucus can be a sign of an upper respiratory infection or chronic conditions like COPD. Viral infections that cause white mucus cannot be treated with antibiotics, so focus on rest ...

Most people are all too familiar with the icky, uncomfortable feeling of having mucus build up in the nasal passageways while suffering through a cold or bad allergy flare-up. Or is it phlegm, rather ...

Mucus is more than just the sticky snot that comes from your nose. This protein-rich goop is found in many other organs, including the lungs and intestines, where it forms a protective layer that ...

Cystic fibrosis (CF) mucus can clog the lungs and digestive tract. Although there is no cure for CF, medications and therapies can help thin this mucus. Share on Pinterest ArtMarie/Getty Images Cystic ...

Americans are weathering the worst flu season in years, as a number of other respiratory illnesses circulate too, such as COVID-19, RSV and the common cold. A telltale sign you’re getting sick is ...