What causes male pattern baldness?
Hair is made in hair follicles which are like tiny pouches just under the skin surface. A hair normally grows from each follicle for about three years. It is then shed and a new hair grows from the follicle. This cycle of hair growth, shedding and new growth goes on throughout life.
The following is thought to occur in men as they more and more become bald:
Affected hair follicles on the scalp gradually become smaller than normal.
As the follicle shrinks, all new hair is thinner than the previous one.
Before falling out, all new hair grows for much less time than the normal three years or so.
Eventually, all that remains is a much smaller hair follicle and a thin stump of hair that does not grow out to the skin surface.
Male hormones are involved in causing these changes. The level of the main male hormone, testosterone, is normal in men with baldness. Cells in the skin of the scalp convert testosterone into another hormone called dihydrotestosterone. For reasons that aren't clear, affected hair follicles become more sensitive to dihydrotestosterone, which causes the hair follicles to shrink. It is also not clear why different hair follicles are affected at different times to make the balding process gradual.
my life is full of stress. I think my hair loss is based with stress.
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