Cold weather changes the upper membrane of the flu virus and it becomes more solid and rubber-like. Scientists believe that these changes in the surface make it easier for the virus to spread from one person to another.
Not only does cold air cause the problem, but dry air also helps the cold or flu viruses to stay infectious for a long time.
Dry air is common in winter and particles released by inhalation, sneezing or coughing evaporate very quickly, resulting in more tiny particles that live longer and travel farther.
The response of our immune system during cold weather also plays an important role in this regard.
Inhaling cold air increases the possibility of negative effects on the immune response in the respiratory tract and makes it easier for viruses to stay there. Cold air weakens the immune response that works against germs in the human nose.
The study found that even a 5 ° C drop in temperature eliminates about 50% of the immune cells fighting viruses and bacteria inside our noses.
Researchers have shown that there is a link between cold air and viral infection. Because even a slight drop in temperature reduces our immunity by 50%.
Similarly, in the cold season, most people spend less time in the sun and this light is an important source of vitamin D for the body. Vitamin D is important for the health of the immune system.
Physical activity also decreases in winter and people spend more time sitting, which also affects the immune system. While people live closer to other people within the four walls, which also spreads the virus faster.
How can it be saved?
A Harvard University study found that face masks may be helpful in this case. Because it not only prevents the germs in the air. It also keeps the nose warm.
The researchers said that the warmer you keep your nose, the better the immune system will work.
Hands should be washed frequently.
Make sure to use the right amount of water.
Eat a balanced diet, especially vitamin D-rich foods such as eggs and fish.
Be physically active.
Ensure cleanliness of floors and other areas in the house.
