Mucus, a fluid in your upper respiratory system, is usually clear. But a number of health conditions can cause it to turn brown. Also known as brown phlegm or sputum, brown mucus can be due to a range ...

Black mucus is rare. It can be the sign of a fungal infection, or exposure to pollutants such as coal, dust or cigarette ...

Your body produces mucus naturally to protect your respiratory system, and under normal circumstances, this protective fluid remains clear and relatively thin. However, when mucus suddenly changes to ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." It’s never any fun feeling under the weather, but when a common cold is paired with excess phlegm, it ...

Healthy phlegm is usually clear and runny, but many different health conditions can change the consistency or color. Phlegm, also called sputum, is mucus produced by your lungs that helps protect your ...

Coughing up blood is usually a cause for concern and should be addressed immediately. Serious conditions that may cause you to cough blood are lung cancer and congestive heart failure. Seek emergency ...

Mucus does more than cause congestion. It is highly beneficial to our health, trapping pathogens and protecting the body from infection. But a recent post on Instagram claims mucus has no benefits.

Breathing disorders are common in the U.S. with conditions like COPD affecting some 7% of the population and asthma affecting another 10%. Digestive conditions like GERD, acid reflux, Celiac disease ...

During Healthy Lung Month and the cold part of the year, you might be thinking a little more than normal about the way you breathe. But during any part of the year, we all need to get oxygen to live.

Even the process of vomiting in itself is a terrifying experience, but when one is informed that they have vomited up phlegm, this can leave one panicked, too. Is it something serious, or an answer ...