Hair loss in women can be related to genetics, hormones and age. Although this is not the leading cause of hair loss in women, Androgenetic Alopecia is still relevant. It may be a serious medical condition which needs proper attention and treatment as early as possible. The hair loss patterns in women also usually differ compared to male hair loss.
Female androgenetic alopecia has the same origin, as explain in men: The follicles are susceptible to androgen derivatives (DHT) this initiate a process of miniaturization with a slow evolution that thins the hair.