The Most Common Cause Of Hair Loss
The most common cause of hair loss is genetics - inherit the tendency to lose hair from either or both of parents. The medical term for the genetic predisposition for hair loss is "androgenetic alopecia".
In androgenetic alopecia, the genes affect how the hair grows. They trigger a sensitivity to a class of hormones called androgens, including testosterone, which causes hair follicles (which hair grows from) to shrink. Shrinking follicles produce thinner hair and eventually none at all. Thus, androgenetic alopecia is caused by the body's failure to produce new hairs and not by excessive hair loss. Heredity also affects the age at which you begin to lose hair and the developmental speed, pattern and extent of your baldness.
Androgenetic alopecia accounts for more than 95% of hair loss in men. By the age of 35 two-thirds of American men will experience some degree of appreciable hair loss and by the age of 50 approximately 85% of men have significantly thinning hair.
Men generally develop bald spots on the forehead area or on the top of the head. In men, the hairs on the top of the head have a genetic sensitivity to the male hormone testosterone while the hairs on the sides and back of the head do not possess this genetic trait and therefore are not affected. For this reason hairs removed from the sides and the back (donor hair) will maintain their genetic predisposition when transplanted and continue to grow when moved to the top of the head where hair loss has occurred.
For woman, female pattern baldness is the most common type of hair loss. It can begin at puberty, but is most often seen after menopause. Women have an overall thinning of the hair throughout the scalp while the frontal hairline generally remains intact.
The most common cause of hair loss is genetics - inherit the tendency to lose hair from either or both of parents. The medical term for the genetic predisposition for hair loss is "androgenetic alopecia".
In androgenetic alopecia, the genes affect how the hair grows. They trigger a sensitivity to a class of hormones called androgens, including testosterone, which causes hair follicles (which hair grows from) to shrink. Shrinking follicles produce thinner hair and eventually none at all. Thus, androgenetic alopecia is caused by the body's failure to produce new hairs and not by excessive hair loss. Heredity also affects the age at which you begin to lose hair and the developmental speed, pattern and extent of your baldness.
Androgenetic alopecia accounts for more than 95% of hair loss in men. By the age of 35 two-thirds of American men will experience some degree of appreciable hair loss and by the age of 50 approximately 85% of men have significantly thinning hair.
Men generally develop bald spots on the forehead area or on the top of the head. In men, the hairs on the top of the head have a genetic sensitivity to the male hormone testosterone while the hairs on the sides and back of the head do not possess this genetic trait and therefore are not affected. For this reason hairs removed from the sides and the back (donor hair) will maintain their genetic predisposition when transplanted and continue to grow when moved to the top of the head where hair loss has occurred.
For woman, female pattern baldness is the most common type of hair loss. It can begin at puberty, but is most often seen after menopause. Women have an overall thinning of the hair throughout the scalp while the frontal hairline generally remains intact.
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