While boogers can potentially tell you something about your health, they're not a perfect diagnostic tool, and this myth is a ...

Coughing up white mucus can signal an upper respiratory infection or chronic conditions like COPD. Viral infections causing white mucus can't be treated with antibiotics, so rest and drink plenty of ...

Harvard Medical School’s Emily S. Wan, MD, discusses mucus plugs in COPD, how to detect them, and what would make them a treatment target.

Sputum is considered a noninvasive marker of airway inflammation, and its color is an indicator of bronchiectasis disease ...

Black phlegm is rare and can be caused by inhaling pollutants like smoke, soot, or industrial chemicals that settle in the airways. Once exposure ends, phlegm usually returns to its normal color.

After 12 weeks of nebulized NAC, patients’ mean phlegm scores, as measured by the COPD assessment test, significantly decreased from 3.47 at baseline to 2.62. N-acetylcysteine (NAC) nebulizer therapy ...

This is a phenomenon that many people will likely experience at some point in their lives, and in most cases, it does not indicate a serious problem. For the majority of individuals, it is not a cause ...

When a person has black or dark-colored mucus, they may have inhaled potentially harmful pollutants. Coughing up black mucus may also be due to an underlying infection or condition. Mucus serves an ...

Disgusting though they may be, phlegm is nothing to sneeze at. Here’s what its color and appearance can tell you about your health, and how to get rid of phlegm. Admit it: After you blow your nose or ...

Allergies, infections, a change in hormones, spicy foods and medication are some of the many reasons you might be blowing your nose often. The idea behind blowing your nose is to expel mucus or ...