What is the color of a normal tongue?

  In normal people, the tongue is light white and relatively thin. The color of the tongue may be related to systemic diseases.  Tongue moss is a layer of mossy scale that covers the surface of the back of the tongue and is white. It is made up of filiform papillae and shed cells on the back of the tongue, food residue and saliva, bacteria and fungi.  The color of the tongue is the reaction of systemic diseases in the oral cavity. Through the observation of bacterial culture on the surface of the tongue, microscopic examination of the tongue and pathological biopsy, it is found that the color of the tongue is often related to the color of the dominant colonies on the back of the tongue. Sometimes it is also related to the color of food intake, smoking, medications or the pH of saliva. If the filamentous papillae of the tongue are proliferating it may cause a hairy tongue, sometimes the black appearance of the tongue may be caused by the black pigmentation of the spores of the root mold, or by the use of mouthwash, or by excessive smoking and consumption of colored foods. Sometimes the yellow color may appear due to the consumption of medicines such as loquat or yellowish, and sometimes the brown color may appear due to the consumption of Chinese herbal medicine, and these exogenous coloring changes of the tongue are also called dyed tongue.

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