I am 16 years old and have just begun to notice the onset of male pattern baldness. Is there a particular reason why someone under 18 shouldn't be taking propecia? MBP generally occurs near/after the end of puberty, so is the risk of side effects really that much higher? I have seen a few threads where doctors have prescribed finasteride to patients as young as myself. Seeing as finasteride seems like the most convenient/most effective short term/most effective long term medication for MBP, if the risks were not much greater for younger patients I would gladly take it.