If you've been sick for a few days and you now cough up darker yellow mucus, it's still probably just a cold. But if it goes on this way for more than a week, it's a good idea to see your doctor.

See Also Stock up on these cold and flu survival must-haves before you get sick — they’re doctor-approved Rhinoviruses are ...

But is the cold weather really what makes you sick? Steve Dale from WGN Radio spoke with Dr. Mattew Kippenhan from ...

You may have grown up hearing that if you went outside in the cold weather without wearing a jacket, you’d get sick. But is this just an old wive’s tale, or does cold weather really make you sick?

Viruses need a host to replicate, and they can survive outside only briefly. When people sick with a common cold or COVID-19 cough or sneeze, they let out respiratory droplets containing the virus ...

Your mom probably used to assure you that doing this one thing was guaranteed to make you sick. But is it true ... otherwise you’ll catch a cold!” With cold and flu season well underway ...