The most common cause of hair loss in both men and women is a deficiency and/or imbalance of Sex Hormones.
Estradiol is the main estrogen our ovaries make during our reproductive years, starting around age 12 or 13 when we begin our menses and lasting through menopause.
Progesterone is critical in balancing Estrogen’s “growth” effects. Without Progesterone, the growth effects of Estrogen would go unchecked.