So, it may be a dumb question, I don’t know. He never used the hard stuff when he was younger.
I know drugs can effect sperm levels (and create damaged sperm) during the time a man takes drugs, but what about 20 years later after being clean? What about any other sexual concerns?



no sperm from his past would be flushed after amount of time and new sperm is always being created
Yes, drugs can make you infertile.