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Androgens (testosterone, dihydrotestosterone) are the most important control factors female of human hair growth. Androgens must hair be present for the growth of beard, axillary (underarm), and pubic hair. Growth of scalp hair is NOT androgen-dependent but androgens are necessary for the development of male loss and female pattern hair loss.MALE PATTERN HAIR LOSS female and hair (Androgenetic Alopecia)It is estimated that 35 million men in the United States loss are affected by female and hair and loss androgenetic alopecia. "Andro" refers to the androgens (testosterone, dihydrotestosterone) necessary to produce female male-pattern hair loss (MPHL). "Genetic" refers to the inherited gene necessary for MPHL to occur. In men who develop MPHL the hair loss may begin any time after puberty when blood levels hair of androgens rise. The first change is usually recession in the temporal areas, which is seen in 96 percent of mature loss Caucasian males, including those men not destined to progress to further hair loss. Hamilton and later Norwood have classified the patterns of female MPHL (See Norwood-Hamilton Scale). Although the density of hair in a given pattern of loss tends to diminish with age, there is no way to predict what pattern of hair loss a young man with early MPHL will eventually assume. hair In general, those who begin losing hair in the second decade are those in whom the hair loss will be the most severe. In some men, initial male-pattern hair loss may be delayed until the late third to fourth decade. It is generally recognized that men in loss their 20’s have a 20 percent incidence of MPHL, in their 30’s a 30 percent incidence of MPHL, in their 40’s a 40 percent female incidence of MPLH, etc. Using these numbers one can see that a male in his 90’s has a 90 percent chance of having some degree of MPHL.
Though humans no longer make use of hair for protection, heat retention, or camouflage, it still remains a very important means by which individuals hair display and are recognized. Appropriate appearance and grooming are still very important in social organization and the human relationships.The human body loss contains approximately five million female hair follicles while the scalp (prior to any kind of hair loss) contains 100,000 - 150,000 hair follicles. Blondes have the greatest number of scalp follicles, hair followed loss by brunettes. Humans with red hair have the fewest number of scalp follicles. The normal growth rate of scalp hair is one-fourth to one-half inch per month.
Come here to find hair loss treatments. A University developed treatment to help reverse hair loss.
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