Men and women experience hair loss for similar reasons.
Men, unfortunately, experience a more dramatic, specific pattern of hair loss commonly termed "Male Pattern Baldness." This loss is caused by dihydrotestosterone (DHT). DHT is a hormone linked with testosterone. DHT binds to receptor sites on the scalp and hair follicles, interacting and interrupting the normal chain of events involved in continual healthy hair growth.
Woman, experience many hormonal changes throughout their lives which can lead to hair loss. In general, women may lose hair after a pregnancy, or during menopause. But it is not limited to just these. Any number of hormonal imbalances can trigger hair loss in women.
Hormonal changes in both men and women can cause hair loss by directly affecting the cells responsible for hair growth or by affecting the level of nutrients and blood flow to the follicle. The hair follicle cannot maintain a healthy growth cycle without proper nutrients and may eventually fall out and die.
Stress affects the hormone balance and it will transmit signals to the hair follicles. The hair follicles then undergo a resting stage. Usually it occurs 3 months after the stressful event has occured and it may take 3 months after the stress period has ended for the hair growth to resume. If the stress continues or is repeated the onset of genetic hair loss may worsen existing hair loss.
A series of other factors can cause hair loss, including diets, the use of certain bodybuilding supplements, and environmental factors.
Chemicals used for dying, tinting, bleaching, straightening or perms can cause hair to become damaged and break off if they are overused or used incorrectly. Also using excessive heat either by use of your normal hairdryer, straightners or curling tongs can lead to hair thinning. Overstating and excessive brushing also can cause hair to fall out if the hair shaft becomes damaged.
SUMMARY: As you can see there are many factors that can cause hair loss in both men and women but they all have one underlying theme in common, hair follicles that are affected by hormonal "clogging" agents and poor blood and nutrient circulation are less likely to experience a healthy growth cycle.