(1) Black hair: Black hair is a unique hair color of China people, but too dark hair is also an abnormal phenomenon. If the hair is too dark, or has never been too dark, and suddenly turns black, there is a possibility of cancer.
(2) White hair: Middle-aged and elderly people's hair is gray or completely white, which is a manifestation of blood deficiency and kidney deficiency, but this is a normal physiological aging phenomenon, not pathological. However, if the hair turns white and the face turns red and bitter in a short time, it is irritability and is a signal of liver disease. Young people's hair turns white prematurely, which may be caused by diseases such as atherosclerosis, tuberculosis, anemia and gastrointestinal diseases.
(3) Yellow hair: Long-term illness, physical weakness or malnutrition will lead to yellow, sparse and dry hair, which is a manifestation of insufficient essence and blood and unhealthy symptoms.
(4) Red hair: It is normal for some people in China to have reddish-brown hair. But if the hair changes from black to red or reddish brown, it is probably caused by lead and arsenic poisoning.
Tips
When abnormal hair color is found, we should pay attention to observation and carry out necessary related examinations in combination with other physical signs, so as to understand our physical condition as soon as possible and take necessary preventive and therapeutic measures.