Why do normal people lose their hair?

Hair growth has a cycle of growth and aging, and natural physiological alopecia actually occurs every day. However, some alopecia is caused by pathological factors. If the daily hair loss is less than 100, it can basically be said to be a normal phenomenon. This daily renewal of hair loss is a natural phenomenon.

Extended data

Physiological alopecia refers to the daily normal physiological metabolism of hair regeneration, shedding and growth every day, and the total number keeps dynamic balance. Including natural alopecia, infant alopecia, postpartum alopecia and senile alopecia.

Seasonal alopecia is generally more obvious when the spring and autumn seasons change, but not everyone will appear. It is normal for the number of hair loss to increase slightly.

Disease alopecia and drug alopecia can be recovered after a period of time as long as the stimulation is stopped.

(Source: Baidu Encyclopedia-Physiological alopecia)