Why Do We Get Colds When It's Cold?

The video debunks the myth that cold weather directly causes colds, explaining that viruses, not temperature, are responsible. It reviews scientific studies showing no direct link between feeling cold and getting sick. Hypotheses suggest cold weather might affect immunity, but evidence is limited. Factors like dry air, low humidity, and indoor behavior increase illness risk. Preventive measures include hand washing and avoiding infected individuals.

What is the primary cause of the common cold?

• Lack of sleep

• Wet hair

• Cold weather

• Viruses

Which hypothesis suggests that cold weather might activate dormant viruses?

• Cold increases stress levels

• Cold weakens the immune system

• Cold weather causes dehydration

• Viruses activate in lower temperatures

How does low humidity in cold weather affect virus transmission?

• It prevents virus particles from spreading

• It makes viruses less active

• It causes viruses to multiply faster

• It allows virus particles to float longer

What is a potential consequence of reduced sunlight exposure in winter?

• Higher energy levels

• Decreased vitamin D levels

• Improved immune function

• Increased vitamin D levels

What is the most effective way to prevent catching a cold according to the video?

• Avoiding cold weather

• Wearing extra layers

• Washing hands with soap

• Taking vitamin supplements