Add Yahoo as a preferred source to see more of our stories on Google. 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, ...

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 ...

Coughing, suctioning, and humidification can help reduce secretions. Preventing the buildup of secretions is an important part of tracheostomy care. People who have a tracheostomy typically experience ...

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 ...