Add Yahoo as a preferred source to see more of our stories on Google. Yellow snot is gross, but does it mean you have an infection? Here's everything you need to know about it. Snot, mucus, phlegm ...

When you're sick you'll often produce more phlegm, and might notice it's thicker or a different color: white, green, yellow or maybe even brown. We all produce mucus, even when healthy. Mucus is a ...

Head mucus The average person produces 1 to 1.5 liters of mucus a day, Husain says. “ (Mucus) lubricates the lining of the nose and throat and helps with filtering debris from what we breathe before ...

To many people, mucus is nothing more than a gross goo, something to be tossed away in a tissue immediately after clearing your throat or blowing your nose. To scientists, it’s nothing short of a ...