Medical1900 - 2025
Myth #97 of 155

Debunked Myths

Myth:
Cold weather causes colds.

The Truth Is:

Viruses cause colds, not temperature! We just cluster indoors more in winter, spreading germs.

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What We Know Now:

The name 'common cold' has cemented this misconception for centuries, but you cannot catch a cold from simply being cold or wet. Colds are caused by over 200 different viruses, primarily rhinoviruses. The correlation with cold weather exists because of human behavior changes, not the temperature itself.

During colder months, people spend more time crowded together indoors with poor ventilation, creating perfect conditions for viruses to spread through air and contaminated surfaces. Some research also suggests cooler, drier air may slightly weaken nasal passage defenses, making infection easier if you encounter a virus.

The myth persists because cold season coincides with temperature drops, creating a powerful illusion of cause and effect. The truth is you could walk through a blizzard naked and not get sick—unless someone sneezes on you first. The virus exposure is essential; the weather is just context.

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Cold weather causes colds. - Debunked | Schoolyard Myths