Aside from hair loss caused by the hormonal changes of menopause, the American Academy of Dermatology reports that 30 million women in the United States are losing their hair due to genetic factors. Thyroid disease, medication side effects and diet also can cause it. Current estimates say that one in four women experiences thinning hair. The so called Female Pattern Hair Loss can be a devastating problem form women. Your dermatologist can advise you how to prevent and potentially reverse this process.