Every year, as winter approaches, cold and flu complaints increase. Scientists tried to understand the reason for the relationship between the cold season and the common cold and found that it is caused by the nose.
The immune system of the human nose, which fights various types of viruses, becomes numb in cold weather. The obvious reason why the nasal immune system is impaired in winter is staying indoors for long periods of time.
Meanwhile, infectious viruses are transferred to their body. Benjamin Blair, the author of the relevant research, has said that "it is not possible to determine one thing as the sole and final cause of winter colds".
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Research has shown that when cells in the nasal passages sense bacteria or viruses, they release billions of secretions. These secretions not only kill dangerous bacteria and viruses, but also warn other cells about pathogenic substances.
As part of this study, experts also evaluated the nasal defense system against a variant of the coronavirus and two cold viruses.
Experts came to the conclusion that when the temperature in the nose falls, the nasal immune system of healthy people is half as strong as in summer.
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