WHAT'S UP WITH...GREEN SNOT

When you stop laughing, we'll tell you why the color of your boogers can reveal a lot about your health.

- KAYLA BLANTON

BEFORE YOU TOSS that used tissue, you might want to take a peek at what's inside. As gross as it sounds, your mucus can be a color-coded reflection of your overall health. Here, doctors explain what it means when your snot turns green.

WHAT EXACTLY IS MUCUS?

The stuff in your nose is made up of water, proteins, antibodies, and dissolved salts, explains Jonathan Parsons, M.D., a professor of internal medicine at The Ohio State University Wexner Medical Center. Your body produces it to keep sinuses and airways hydrated and lubricated and to protect against irritants, he adds.

WHY DOES IT TURN GREEN?