A new Yale study proved that cold weather causes colds. The researchers managed to bring a scientific explanation for the plea of mothers everywhere. Now they will be able to cite the Yale study when asking their children to take a jacket when they go outside.
Akiko Iwasaki, an Immunobiology professor at Yale’s School of Medicine, discovered that the immune system has weaker responses to viruses when the body is exposed to cold temperatures.
The main organ that is affected by the cold is the nose. In there, the rhinovirus is able to replicate freely, especially when the immune system is not entirely capable of retaliating.
Iwasaki explained that when an individual inhales cold air, the airway gets cooled. Our bodies are not built to deal with these conditions, thus offering the virus the chance of replicating itself at a fast pace.
In cooler temperatures, our nasal passages are affected by the cold. This significantly limits the production of molecules that block the spread of the invading virus. Moreover, the infected cells’ ability to die is also affected.
The researcher explained that when affected cells are allowed to linger, the virus replicated better. Usually, this happens when the organism is exposed to cool temperatures.
Moreover, the Yale scientists in charge of the study that concluded that cold weather causes colds discovered that the low temperatures influence the way in which the enzyme responsible for breaking down the virus reacts. It seems that it is weakened by the cold, leaving it powerless in front of the virus invasion.
To avoid getting infected with the cold virus, Professor Iwasaki advises people to wash their hands regularly, especially is they step outside. Individuals can also keep their nasal cavity warm with a scarf or a mask so that they could keep their immune system ready to fight any foreign invaders.
Iwasaki, who is the lead researcher of the paper, also mentioned that the chances of catching a cold increase in the fall when temperatures suddenly drop, and people are exposed to infected individuals in crowded areas.
Now that scientists from Yale scientifically proved that cold weather causes colds will you reconsider wrapping yourself up in a warm scarf when autumn starts?
Image source: Pixabay
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