Mucus is your body’s natural defence, but too much of it can make breathing feel like you’re inhaling through a wet sponge. Your lungs produce mucus every day to trap dust, germs, and irritants.

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 ...

Breathing difficulties and persistent mucus buildup can significantly impact daily life, making simple activities feel exhausting and uncomfortable. When airways become congested with thick secretions ...

Understanding how mucus changes, and what it changes in response to, can help diagnose illnesses and develop treatments. Researchers develop a system to grow mucus-producing intestinal cells and study ...

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 ...

White eye discharge is a common condition that occurs when mucus, tears and tiny debris collect around the eyes. In most cases, small amounts of discharge, especially after waking up, are completely ...

Mucus, also called phlegm, is the lubricating substance that lines the surface of your lungs, mouth, sinuses, stomach, intestines, and even eyes, according to the National Institutes of Health (NIH).