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Why are colds and flu more common in winter?

Health is one of the most desirable, yet most difficult to maintain, aspects of living. Often when people are healthy, they don’t appreciate their well­being. It’s only when health begins to decline that they begin to recognize its true value. This often occurs during the annual “cold and flu season.”

It may be surprising to know that there is a scientific explanation for why colds and the flu have a season. Viruses like influenza are more transmissible in low humidity and cold temperatures. In the autumn months, the temperature and humidity outside decreases, so many of us spend more time inside. Ironically, indoor heating also lowers humidity. Therefore the decrease in air temperature outside in the fall and winter, combined with the indoor heating, actually increases the transmission of the virus, thus creating the flu “season.”

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.