The marijuana herb available in the U.S. is produced in part by local growers, and partly trafficked into the country from Mexico as well as from Canada but to a lesser degree.
Memory tests of people who have taken Ecstasy as compared to non-drug users have shown that the Ecstasy users had lower scores.
Studies indicate that good drug rehab outcomes are contingent upon adequate treatment length.
Lower rates of chronic use of marijuana among females may be a result of the social taboo against substance abuse among women.