The cause of long gray hair may be kidney deficiency. Kidney deficiency is mostly caused by lack of innate endowment (poor innate constitution and function), loss of nourishment in later life, over-exertion of housework, and old age.
Insufficient innate endowment: at a young age, the kidney energy should be gradually filled, if the innate endowment is insufficient, and the kidney essence is deficient, the kidney essence can not produce blood, and the hair grows gray, and sparse, easy to fall off.
Loss of nourishment: youth, kidney qi should be strong, and full of essence, making hair black, dense and shiny. If the latter is not nourished, the spleen and stomach are damaged, and there is no source of qi and blood production, so it is impossible to support the innate kidney essence, and the kidney essence can not produce blood, and grow gray hair.
Excessive housework: If you do not know how to control housework, it may also deplete the kidney essence, unable to produce blood, and long gray hair, and easy hair loss.
Aging: the elderly, the gradual decline of kidney energy, essence deficiency, kidney essence can not produce blood, blood can not produce hair, so the hair white, thinning, dry, lusterless, shedding.
Gray hair in middle-aged and old people is generally a physiological phenomenon, no need to worry too much, if it is a young child and adolescent gray hair, it is recommended to consult a doctor at a regular hospital.