Mucus production increases significantly during a cold due to the body's response to cold germs, which involves histamine release that triggers mucus secretion from mucous membranes. This mucus is primarily composed of water, glycoproteins, dead cells, and other particles, serving to protect the lungs by trapping contaminants. The body can produce up to two quarts of mucus daily during a cold, leading to persistent sneezing and congestion. If mucus changes from clear to cloudy or yellow, it may indicate a bacterial infection, while clear mucus typically signifies a viral infection. Understanding these processes can help manage symptoms and determine when medical intervention may be necessary.
