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 ...

Your body produces mucus naturally to protect your respiratory system, and under normal circumstances, this protective fluid remains clear and relatively thin. However, when mucus suddenly changes to ...

Cystic fibrosis (CF) may lead to exocrine pancreatic insufficiency (EPI). This is because CF causes the body to produce sticky mucus that can block the pancreatic duct, leading to various symptoms.

Ever wondered why the colour of your snot is different when you’re sick? You’re probably not the first person to ask this question. There are actually many reasons why your snot’s changes colour when ...

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 ...