Cold Weather and Colds: Debunking the Myth, Explaining the Real Link
Colds are caused by viruses (mainly rhinoviruses), not by cold temperatures themselves.
Why Colds Peak in Winter
- Indoor crowding: More person-to-person contact.
- Dry air: Impairs mucosal defense in nose/throat.
- Immune modulation: Cold exposure may slightly suppress antiviral immunity.
- Reduced vitamin D & exercise: Both support immune function.
Prevention focuses on hand hygiene, ventilation, vaccination (flu, COVID), and healthy lifestyle—not merely staying warm.
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