In TODAY.com's Expert Tip of the Day, a doctor reveals the important clues about your health that can be found in your snot.

If you’ve walked into any pharmacy, you’ve been greeted by an insane choice of combination cold remedies. With a variety of labels like cold and flu, night-time, cough and sinus, extra strength, and ...

A nose that won't stop running isn’t just annoying; it can affect your quality of life. “If you've got a runny nose that you constantly have to sniff up or use a tissue—that has a significant impact ...

Struggling to sleep with a blocked nose or cough? These simple, effective tips will help you rest better when you’ve got a ...

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Every winter, I prepare for my clinic schedule to fill up with patients experiencing runny noses, coughs, and fevers caused by viruses, such as rhinoviruses, influenza, and COVID-19. I also prepare ...

Klein is a contributor for TIME. Photo-Illustration by Chloe Dowling for TIME (Source Images: Plume Creative/Getty Images, Tess Trunk—Getty Images, Valerii Stoika via Canva.com, Sketchify via ...