In people with chronic obstructive pulmonary disease (COPD), the color of mucus can vary depending on the severity of the condition and the presence of other factors, such as infection.
Normally, mucus is clear or white in color. However, if there is an infection in the lungs or airways, the mucus may become yellow or green. This is because of the presence of immune cells, bacteria, and other substances in the mucus.
In advanced COPD, the mucus may become darker in color, ranging from yellow to brown or even black, due to the accumulation of pollutants and other substances in the lungs over time. This is known as smoker’s cough, as it is common in people who smoke tobacco.
It is important to note that the color of mucus alone is not always a reliable indicator of the severity of COPD or the presence of an infection. If you have concerns about your mucus color or other symptoms related to COPD, it is best to consult with a healthcare professional.
