Sex hormones would have to be involved if it messed with sperm.
Here's a line from "
Effects of chronic marijuana use on testosterone, luteinizing hormone, follicle stimulating hormone, prolactin and cortisol in men and women." (the study is in "Granny Storm Crow's list"- run a search.)-
"Chronic marijuana use showed no significant effect on hormone concentrations in either men or women."
I think that says it all in a nutshell! Hormone concentrations were normal.
And do you remember how many "hippie babies" there were?
Granny