Hormonal Hair Loss
Female pattern baldness is the most common type of hair loss in women. Female-pattern baldness is a pattern of hair loss (alopecia) caused by hormones, aging and genetics. Unlike male-pattern baldness, female-pattern baldness is an over-all thinning which maintains the normal hairline.
Female pattern/hormonal hair loss is influenced by additional factors including estrogen and progesterone levels. These levels start to increase during puberty and peak around the age of 35-year-old.
After this peak when these two hormones begin to decline, DHT becomes more capable of negatively influencing hair loss.