Over 60 million people in the US have tried marijuana. Millions of American men smoke marijuana regularly. What effect does it have on their sex drives? Can it cause ED?
I did some research on this question. Here is a link to an article (from 1981) in the New York Times (LINK HERE). It says that short term, the active drug in marijuana (THC) raises testosterone, which is good; however, chronic use can significantly lower testosterone, which is bad. This may be why some young men who smoke a lot of pot have a low sex drive.
Most of the other information I can find supports this view, which would affect men and women.