Even if it is kind of gross when you're full of it and wrestling with it, phlegm actually serves a useful purpose: The thick, sludgy substance—made up of mostly water, salt, and antibodies—is designed ...

Mucus is a slippery, protective substance that keeps your airways, throat, and digestive tract moist, trapping and clearing out dust, allergens, and germs to help protect against irritation and ...

Phlegm buildup in the lungs and throat is a common problem, especially during colds, allergies, pollution exposure, or respiratory infections. Phlegm is a thick mucus produced by the respiratory ...

When you breathe, allergens, viruses, dust, and other debris stick to your nasal mucus, which then passes out of your system. Sometimes, your body can make too much throat mucus, requiring frequent ...

Various home remedies can help manage phlegm and mucus, such as drinking plenty of fluids and using a saline nasal spray or rinse. If home remedies do not help, over-the-counter and prescription ...

The buildup of excess mucus in your nasal passages and throat is a common and uncomfortable symptom of many illnesses. JDawnInk via Getty Images Being sick with a cold or other congestion-causing ...

Post-nasal drip occurs when mucus moves down your throat, causing irritation and cough. Here’s how medical professionals say ...