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.
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What Causes Phlegm?
If you're wondering how to get rid of phlegm in your chest and throat, you can try drinking plenty of fluids, using a humidifier, and gargling warm salt water. Phlegm, or sputum, is a slimy, slippery ...
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