Yes, it does. The men on both sides of my family have hereditary slightly higher than average testosterone levels, and hair loss starting around 18-20yo is seem

Yes, it does. The men on both sides of my family have hereditary slightly higher than average testosterone levels, and hair loss starting around 18-20yo is seemingly unavoidable. None of us are lantern-jawed propaganda poster supermen, though. So testosterone is not the end-all, be-all hormone :-)