Boys’ hair loss may be kidney essence deficiency evidence, but also may be physiological factors, blood deficiency, liver qi stagnation (liver qi and blood transportation is not smooth, emotional depression) and other conditions, need to be specifically analyzed. 1. Kidney essence deficiency: Hair belongs to the part of kidney essence in traditional Chinese medicine, if kidney essence is insufficient and deficiency of essence, it may lead to hair loss or hair whitening, etc. So there are some guys who lose their hair because of bad kidneys. 2. Physiological factors: under normal circumstances, the human body needs a normal metabolism, there will be hair loss and growth, as long as there is no significant change in the overall amount of hair is normal. 3. Blood deficiency: hair will be nourished by the human body qi and blood, if the boys lose too much blood or overwork depletion of qi and blood, will also lead to hair loss, so that the amount of hair to reduce. 4. Liver qi stagnation: If there is long-term mental tension, too anxious and other symptoms, there may be liver qi stagnation, this time the hair is more prone to fall out. If the boys lose too much hair in a short period of time, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to carry out the appropriate treatment, not to blindly dispose of their own, so as not to delay the condition.