Finasteride effectivness based upon age

Fin at a young age, 18, 19, 20, etc. Should you do it? Messing with your hormones at such a young age doesn’t seem like a good idea. Does it mess with them as much as people say and would you advise someone of that age to take fin if they’re balding?

I routinely prescribe finasteride to young men as I find it is often very effective. The time the hair loss is caught has much to do with its effectiveness. The earlier the hair loss or even before hair loss while the hairs are miniaturizing, the more the hair responds well to finasteride. Few men have complained about hormone issues to me. I have prescribed thousands of men this drug (all ages), and I notice those who lost hair within the past 2-4 years get the best response, while men who lost hair ten years or more only sometimes responded with hair regrowth. Even men in their 40s, if they start finasteride just after their balding starts (late balding men), should get a good response to finasteride.