This usually begins at the onset of menopause. A Special Report - Uncovering the Truth Behind Women's Hair Loss At present, there are more than 25 million women in the United States who are experiencing hair loss and it causes them severe depression.

Unlike men who become totally bald upon maturity, many women experience significant hair thinning, particularly around the forehead and the crown of the scalp. These conditions however, are usually temporary and when cured, hair fall eventually stops and re-grows in time. At the onset of menopause, a women's estrogen levels decline and more testosterone becomes available resulting in shorter hair growth cycle and finer hair strands. As women age, their skin also ages due to decline in estrogen levels, which also causes thinning of the hair. Experts say that the natural growth of hair is at the rate of about inch each month with each hair having a growth phase of 2 to 6 years. The most com causes of women's hair loss are associated with pregnancy, crash diets, major surgery, severe stress, thyroid disease, chemotherapy, high fever and other severe infections. Eventually shedding of hair occurs.

At the age of 80 to 90, the women's hair follicles have shrink so much that hair growth completely stops.