Half of all men will experience noticeable hair loss during their lifetime. The cause is genetic 90 percent of the time, while the rest is considered “metabolic” hair loss.

Hair loss genes passed down from either parent might activate at any time after maturity, depending on individual genetics. When activation occurs, hair becomes sensitized to di-hydro-testosterone, or DHT, a testosterone metabolite that kicks off a chain of events that leads to a pattern of progressive miniaturization of the hair follicle. Without treatment, these hair follicles eventually will die, leading to permanent hair loss.

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