Hair Restoration: Causes and Solutions for Permanent Hair Loss

    August 2007 in “ CRC Press eBooks ”
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    TLDR Hair loss is mainly caused by a testosterone byproduct, and hair restoration surgery uses hair from the back and sides of the scalp.
    The document from 16 years ago discussed the cause of permanent hair loss, largely attributed to the testosterone metabolite, dihydrotestosterone (DHT). DHT was found to "turn off" genetically sensitive follicles, typically located in the frontal or frontoparietal scalp, leading to what is known as male pattern baldness. The follicles in the occipital and parietal regions of the scalp were identified as the donor areas for restoration surgery. It was noted that a balding person typically had between 5000 and 6000 follicles available for hair donation, having lost up to 30,000 follicles.
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