If your tongue is really red, it might mean you're not getting enough vitamins like B12 or folic acid. It can also happen if you have a fever or an infection.
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If your tongue looks kind of pale or white, it could mean you have anemia, which is when you don't have enough iron or B12 in your body. It could also mean your blood isn't moving around well.
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If you see a white coating on your tongue, it might be a sign of an infection caused by fungus or bacteria. Or it could just mean you're not keeping your mouth clean enough.
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A yellowish color on your tongue could mean you have issues with your liver or gallbladder. It could also happen if you're not drinking enough water or if you have a fever.
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This is rare, but if your tongue looks black and hairy, it could be because of germs or yeast growing on your tongue. This often happens when you don't clean your mouth well, or if you use certain medicines or tobacco.
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