Hearing others coughing and choking is one of the annoying things in life, but learning to listen to your cough can sometimes ...

Mucus isn't exactly something people give much thought to — until they're sick and dealing with a constantly runny nose. But mucus is actually an important part of a healthy immune system, according ...

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

Contrary to conventional medical belief, cystic fibrosis patients' lung infections might be caused by a lack of mucus, not an excess, according to a study by researchers at Wake Forest University ...

Amanda MacMillan is a health and science writer and editor. Her work appears across brands like Health, Prevention, SELF, O Magazine, Travel + Leisure, Time Out New York, and National Geographic's The ...

People often dismiss a cough as a minor ailment, but sometimes it can be a sign of an underlying problem, especially when ...

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 is a natural reflex for clearing the throat and lungs of irritants. Infection is a common cause of a dry cough. Other possible causes include postnasal drip, asthma, idiopathic pulmonary ...

Cystic fibrosis (CF) is a rare autosomal recessive disorder that affects numerous systems of the body. It is a complicated disease that differs from person to person. An autosomal recessive disorder ...

Bloody boogers form when blood mixes with mucus in the nose and the mucus dries. Various causes may include nose-picking or ruptured vessels. The nose lining is delicate and rich in blood vessels, and ...

Hard boogers in the nose can be helpful in keeping dirt and germs out of your airways, but bloody boogers could indicate irritation or infection. If this is the case, a doctor can treat any underlying ...