Everyone loses hair each day. In fact, it's normal to lose up to 100 hairs per day.
But when people experience increased hair loss, it can sometimes be a sign of stress, illness, anemia or thyroid disease. Or, some women can actually develop a hereditary form of gradual hair thinning in the central scalp area.
If you think that your hair loss is not normal, it's probably a good idea for you to see a dermatologist for evaluation and blood work to exclude any underlying cause.