Do you really know? Does cold weather really make us sick?
Nov 7, 2025
Is it really true that cold weather makes us sick? Recent research suggests there might be a connection! Cold air can impair our nasal defenses, making us more susceptible to viruses. Interestingly, while cold alone won't make you ill, it can make infections easier. Plus, winter brings more indoor crowding, boosting virus transmission. The advice to wrap up warm and consider wearing a mask could help protect against those pesky pathogens. Stay informed and stay healthy!
AI Snips
Chapters
Transcript
Episode notes
Cold Reduces Nasal Immune Defenses
- Cold air can weaken nasal mucous membrane defenses, especially extracellular vesicles.
- This reduced nasal immunity may make it easier for viruses to enter the respiratory tract.
Fewer And Weaker Extracellular Vesicles
- The study found we produce fewer extracellular vesicles at lower temperatures.
- Those vesicles also become less effective when it gets cold.
Limit Exposure And Protect Your Nose
- You still need exposure to a pathogen to become sick, so limit close contact indoors.
- Wear warm clothing and consider a face mask to protect nasal passages and reduce infection risk.