A scientific study proves that “cold is the cause of every illness”

Cold is the cause of every ill, a recent scientific study revealed, and the new study, which peer scientists are describing as a breakthrough, links colder air temperatures to a weakened immune system.

"This is the first time we have a biological and molecular explanation for one factor in our innate immune response that appears to be limited by cold temperatures," Stanford rhinologist Zara Patel told CNN.

In the study, which was recently published in the Journal of Allergy and Clinical Immunology, researchers found that a drop in temperatures of just nine degrees Fahrenheit can kill nearly 50 percent of the cells that fight bacteria and viruses inside the nostrils.

"Cold air is linked to an increase in viral infection because you've lost half of your immunity just because of this slight drop in temperature," co-author Benhamin Bleier, a Harvard Medical School rhinologist, told CNN.

But at the same time, scientists warn that the study needs additional proof factors, as Patel notes, “It is important to remember that these are studies in the laboratory, which means that although it uses human tissues in the laboratory to study this immune response, it is not a study that is carried out.” Doing it inside someone's nose.

"The results of in vitro studies are often confirmed in vivo, but not always," Patel added.

The team of researchers found that extracellular vesicles (EVs), which are small versions of cells that are unable to divide like normal cells, can fend off respiratory viruses and bacteria invading the gills.

In response to these invasions, the body expels EVs into nasal mucus, where they prevent germs from entering the body.

The researchers found that even a slight drop in temperature can greatly impair EV production, in addition to destroying other defenses, such as small RNA that can also attack germs.

The researchers concluded that the drop in temperature was enough to kill approximately 42 percent of the EVs, resulting in a nearly 50 percent decrease in the immune system's ability to fend off infection, according to Blair.

For this reason, Patel advised to wear a mask to keep cold and flu away during the winter, explaining that by “preventing our nasal cavities from getting too cold.”

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