Yellowing of tongue coating can be divided into many different situations, such as light yellow, light yellow, dark yellow, burnt yellow and so on. The darker the color of tongue coating, the heavier the heat evil. The thin yellow and dry tongue coating indicates that the heat is abundant and the body fluid is damaged. If the tongue coating is yellow, dry and prickly, and the tongue is cracked, it will be extremely hot and the body fluid will be seriously injured. In general, yellowing of tongue coating is caused by food accumulation or improper diet. Or spleen deficiency and damp heat in traditional Chinese medicine. As long as you change your diet properly, you will get better after a while.
If a person's tongue coating is thick and smelly all the year round, it generally means that there is a small problem in the stomach. If there is no other situation, you can adjust from the aspects of diet and daily life. Keep a regular life. Eat some digestible foods, such as eating more fresh fruits and vegetables, eating less greasy and fried foods, and it is best not to smoke or drink.
The tongue coating is black and sticky. If this is the only case, the tongue edge is still normal and reddish, and there is no other discomfort, then it is considered to be dyed because of eating other foods. However, if you have a serious stomach problem, your tongue coating turns black, and your tongue is dark red or even blue, you should be alert, which means that your condition is getting worse and you should be treated in time.
Some people's tongue coating will appear like a map, not only with different thickness, but also with different colors. For such people, if there is no other discomfort, it should be a physiological change and no treatment is needed. If you have stomach trouble or other chronic diseases for a long time, this phenomenon of tongue coating is mostly due to the performance of yin deficiency.