In TODAY.com's Expert Tip of the Day, a doctor reveals the important clues about your health that can be found in your snot.

Mucus isn't exactly something people give much thought to — until they're sick and dealing with a constantly runny nose. But mucus is actually an important part of a healthy immune system, according ...

The color of your snot can tell you about your health. Clear is normal, yellow or green may show infection, white can mean ...

If you’re blowing your nose regularly, it’s hard not to notice your mucus—and what color it is. So it can also be alarming if you happen to spot yellow, brown, bloody, or green mucus in your used ...

Whether you're dealing with a runny nose, cough or congestion, your mucus can help determine if it's a minor bother like a common cold, allergies or a more serious health issue. That's right, the ...

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 ...