The kidney deficiency will generally appear sweating, back discomfort, insomnia, seminal emission, impotence and other symptoms, but most will not cause the beard to grow too fast, the beard grows too fast and kidney deficiency does not have a greater relationship. The speed of beard growth exists a great deal of individual differences, endocrine, genetic, excess nutrition, shaving stimulation and other factors may affect the growth rate of the beard. 1, endocrine: puberty, stay up all night and other circumstances will make changes in the endocrine level, such as androgen increase, if androgen is high, it will be manifested as the second sex characteristics obviously, the beard grows too fast, increased libido, etc.; 2, genetic: general Immediate family members if hair is vigorous, the offspring may also be hairy, faster growth, you can observe the hair growth of immediate family members, as one of the factors to determine whether the growth rate of their beard is normal; 3, excess nutrients: when the body is more adequate nutrients, the body blood flow, can stimulate the body hair growth vigorous, when the beard will grow too fast; 4, shaving stimulation: shaving will Stimulate beard root growth, if the frequency of shaving is too high, it will stimulate the growth of beard, beard growth too fast, but other parts of the hair growth is normal; 5, other reasons: beard growth too fast may also be related to pathological factors, such as hormone overproduction, hirsutism and other conditions, hormone overproduction will generally cause acne, and hirsutism is generally manifested as a whole body hair growth fast , hair flourishing. Therefore, the beard grows too fast and kidney deficiency does not have a greater relationship, when the performance of the beard grows too fast, you can initially determine through the symptoms whether it belongs to the pathological factors caused by the beard grows too fast, if suspected of being caused by disease, it is recommended to seek medical attention in a timely manner, improve the relevant examination, if there are abnormal lesions, should be treated in a timely manner using appropriate methods.