Scientists working to learn how cold weather impacts common cold

Scientists have long tried to explain why cases of cold and flu seem to increase over the fall and winter months.

A new study finds the answer could be in the nose.

Particles known as EVs line the nasal cavity and help fight off germs that you might breathe in.

However, researchers found when the temperature outside decreases – the temperature in the nasal cavity also decreases.

This temperature drop reduces the EVs immune response, making them less effective in fighting off infections.

More research needs to be done. However, scientists say it’s a first step towards understanding the link between cold weather and the common cold.