How Your Snot Works and Why Does It Turn Green When You Are Sick

We take snot for granted, but it’s actually a really important substance that keeps our nose (and lungs, and even our digestive system!) Running smoothly. This video talks about these sometimes green spots.

The color of the snot varies and turns green when we are sick, due to a greenish enzyme called myeloperoxidase. And it gets fatter because it is full of living and dead immune cells. Watch the video to learn more about this slimy substance.

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