Is 20 to early to start finasteride?

I went to the dermatologist recently because I’m really worried that I’m starting to lose my hair. I haven’t really noticed any shedding or anything but the hair above my temples seems to be very slightly higher than I remember . Basically the doctor said she couldn’t tell if my hairline was receding or not. When I asked about Finasteride she said that even if i was...

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