Women's Health

“ The hair follicle is a structure that encases the lower part of the hair shaft. Each follicle contains blood vessels that nurture new hair growth. All of our hair follicles are present at birth, and throughout our lifetime each follicle grows and sheds single hairs in a repetitive cycle. The growth phase for a single new hair lasts two to three years. At the end of this time, growth ceases and the follicle enters a resting phase. After three to four months in the resting phase, the hair is shed and the next growth cycle begins. On a normal scalp, approximately 80 to 90 percent of follicles are growing at any time. And each day, about 75 follicles shed their hair and the same number enter a new growth phase.
Men and women experience Androgenetic Alopecia with equal frequency, although it may be camouflaged better in women. People who experience this type of hair loss have some hair follicles with a shorter than normal growth phase and produce hair shafts that are abnormally short and thin. These follicles are said to be "miniaturized." They develop because of hormonal changes that occur in the hair follicle itself, although men with male pattern balding also may have higher levels of dihydrotestosterone (a byproduct of testosterone) in the blood.
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