Nose and winter link in colds

The article discusses the role of upper respiratory infections, especially during winter, and how environmental factors such as low temperatures and dryness interact with the body to increase the risk of colds and influenza. The study explains that the cold reduces the efficiency of the cilia lining the nose and weakens the immune system, making it easier for viruses to spread. It also highlights the importance of extracellular vesicles in mucus in regulating immunity and how they are affected by decreases in temperature, which impairs the body's response to infection and raises the likelihood of respiratory illnesses.

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