This is why my tongue is coated with black fur when I wake up in the morning

It is a common phenomenon for many people to have a black tongue coating when waking up in the morning, but most people do not know what causes this situation. In fact, black tongue coating in the morning is mostly caused by gastrointestinal discomfort. At this time, you should pay more attention to your diet and never eat irritating food.

What causes black tongue coating?

There are various kinds of bacteria, molds and other microorganisms growing in the human mouth (including on the tongue coating). They usually restrain each other and maintain a certain balance, and do not pose any hindrance to human health. If a large number of multiple broad-spectrum antibiotics are used due to disease needs, the balance of these microorganisms will be broken. Some bacteria that are more sensitive to antibiotics are killed, while fungi that are relatively resistant to these antibiotics take the opportunity to grow in large numbers. Since molds can produce a variety of colors, various colors of tongue coating ranging from brown to black can appear, which can recover naturally after stopping antibiotics.

However, some people develop black tongue coating without ever taking antibiotics. For example, some people with long-term fever may have burnt black tongue coating. Traditional Chinese medicine believes that extreme heat turns into fire, and the fire "burns" the tongue coating to form a black coating. Some chronic diseases, such as uremia and malignant tumors, will also cause black tongue coating when the condition worsens, which is a sign of critical illness.

In another situation, when the mind is under a high state of tension, the tongue coating will also appear black. For example, some "cancer-phobic" patients who suspect they have cancer will have a black tongue coating within a few days. The coating at the root of the tongue is very thick and even leans from the back to the front like hair. After examination and cancer is ruled out, their worries are relieved and they can often recover without medication, and the black coating will disappear naturally. Some people explain that when people are nervous, the acidity in their mouth increases, which is conducive to the growth of mold.

In addition, when some chronic patients have symptoms of kidney deficiency (such as weakness in the waist and knees, dizziness, tinnitus, and sexual dysfunction), they may sometimes have black tongue coating. After treatment, the "kidney deficiency" will improve and the black coating will disappear naturally.