Why your immune system struggles with seasonal changes
The Weather Channel · Just In
The Weather Channel
Just In
When the seasons change, your immune system has to work overtime to keep up with shifting temperatures, drier air and allergy triggers. Add in less sunlight, lower vitamin D and more time indoors in close quarters with germs and it’s the perfect storm for your body’s defenses this season.
Breakdown
- Seasonal temperature shifts put stress on the immune system. 4s
- Cooler, drier air helps viruses spread more easily. 10s
- Reduced sunlight can lower vitamin D levels, impacting immunity. 14s
- Spending more time indoors increases exposure to germs. 18s
- These factors together make people feel more run down during seasonal changes. 22s