How Testosterone Makes You Hairy

Male or female, most of us have body hair — some far, far more than others. This video explains how testosterone fuels the growth of hair all over your body.

Whether you want more of it or less of it — and wherever that may be — the key driver in hair production is the male sex hormone. This video explains how an excess or lack of it can lead to a full beard or shiny head. [YouTube]

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