The man's face is dark but his body is not dark

Darkening of the face is a liver problem. The liver is mainly responsible for digesting and absorbing various substances such as nutrients in the colon and reorganizing them into the substances it needs. It is a very important human organ. At the same time, there will also be a lot of toxins that enter the liver and cannot be eliminated. Over time, they will accumulate, with external manifestations such as yellowing of the complexion.

It may also be caused by poor blood circulation system. You need to pay attention to it and exercise more regularly.

It is also possible that the sun protection and isolation work is not done well. Pay attention to applying sunscreen lotion when going out.

There are two main ways of metabolizing melanin. One is that it is dissolved by acid-alkaline enzymes during the growth and migration of the epidermis, and finally falls off as the cuticle becomes thinner. There is also one type that migrates to the dermis and is engulfed by melanophages, enters the blood circulation, dissolves, and is excreted from the kidneys.

The first is a natural function of the human body, but the second metabolic method can easily cause the skin to turn yellow and black for people with abnormal liver function.

When the liver detoxifies, due to the fluidity of the blood, it does not close the door to do this work, but detoxifies while flowing. While detoxifying, other parts of the human body will also produce metabolic substances during normal operation.

Therefore, there are always some toxins in the blood, which cannot be completely detoxified. We can only maintain the normal operation of the human body, but we must not cause accidents and increase the body's cleansing burden, such as staying up late, drinking, taking medicine, infections, etc. Otherwise, not only will the detoxification function of the liver be damaged, but the cells of other internal organs will also accelerate aging, causing the body's toxins to greatly increase the water content in the blood.

This kind of biological macromolecule toxic substances will make the blood thick and sluggish, and eventually stagnate in the capillaries of the body and become "dead blood".

You may not know how thin the capillary is. If you look at it with a microscope, you can see that a small blood cell can just pass through it. It's okay if one line is blocked, but if there are too many blocks, like congestion, over time, the blockage will become bigger and bigger, affecting each other, and traffic will be paralyzed.