What Percentage of Early 20s Patients Have Side Effects from Propecia?

I am a 21 year old male and I have a couple questions regarding a product: Propecia. From what I’ve read, you seem to be in favor of Propecia. Although I’ve always had a high forehead, it is starting to recede on the sides. I don’t think it necessarily looks bad; I just think it’s hard to find a hair style that makes it look good. But, my question for propecia is: what percentage of people that take propecia at my age end up having sexual problems? I just assume be bald if I knew I’d have lingering sexual effects.

First of all, I like to see all patients personally and perform a miniaturization study, before starting them on Propecia. This way, I can follow the progress of their hair loss or gain in the future and I also can avoid using medication for the patients who don’t need it.

I have not seen any study that looked into the side effects of Propecia in different age groups. Sexual side effects can be complex, because it might have to do with patient’s sexual activity in different ages as much as other things. I would suspect that decreased libido in men in their 20s would be lower than men in their 50s (for example) as the sex drive in young men is generally very high to begin with.