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Why do some people breathe through their mouth instead of their nose, and what effect does it have on their health?
Tiny cilia and mucus inside the nose block out things like dust, pollution, and bacteria. This makes the air that reaches the ...
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.
The color of your snot can tell you about your health. Clear is normal, yellow or green may show infection, white can mean ...
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