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 ...

Make your own slime and learn more about the many kinds of mucus in a hands-on SciFri education activity! Without mucus, you couldn’t blink, swallow, smell, or taste. You couldn’t digest your food, ...

Mucus consists mainly of water and a gel-forming molecule called mucin. The body uses mucus to protect tissues, remove particles, and prevent infections. Mucus is essential for the functioning of many ...

The protective substance is an important barrier between the body and the environment. Here’s how researchers are using it to understand health. Credit: Wikimedia Commons/CC BY-SA 4.0 When Pilar Vigil ...

Having black or dark phlegm or mucus can be distressing. It can often signal a serious disease or exposure to unhealthy pollutants. The presence of mucus is not a sign of disease and shouldn’t pose ...

Mucus is a normal part of the lungs. But smoking and other issues can cause too much mucus to collect there. (Photo Credit: iStock/Getty Images) Your body makes about a liter (approximately 1 quart) ...

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 ...

Infections and allergies can cause thick, glue-like nasal mucus. Environmental factors, like a dry climate, can also contribute to this. Nasal mucus is created by the tissue lining of your nose and ...

When you’re sick you’ll often produce more phlegm, and might notice it’s thicker or a different colour: white, green, yellow or maybe even brown. What can this phlegm – also called mucus, snot, sputum ...