Being Sick From the Cold: Whats True?
A common misconception is that cold weather causes illness.
In reality, it’s germs like bacteria and viruses that cause infections.

Johner Images / Getty Images
This misconception tends to be due to the rise ininfluenzaand other communicable respiratory infections in the colder months.
However, people with chronic conditions or who areimmunocompromisedmay develop serious symptoms.
Viral infections like influenza can cause serious complications likepneumoniafrom the influenza virus or an opportunistic infection from bacteria.

One of the best ways to prevent certain illnesses is to get vaccines when available.
Theflu vaccineandpneumonia vaccinecan help prevent infection and complications related to the condition.
Benefits of Fresh Air
Going outside and getting some fresh air can have health benefits.
Vaccinations are available for influenza, COVID, pneumococcal pneumonia, and RSV.
Talk with your doctor to see which ones would be appropriate for you.
Summary
When cold weather arrives, it brings along runny noses, colds, and the flu.
But these illnesses are not because of the cold.
They are sparked by an increase in gathering indoors and lower humidity.
2020;21(12):1741-1745. doi:10.1016%2Fj.jamda.2020.10.030
Centers for Disease Control and Prevention.Flu symptoms & complications.
Harvard Health Publishing.How to boost your immune system.
Harvard Health Publishing.A prescription for better health: Go alfresco.