Does Marijuana Increase Libido?

(CNN)In the movie "Annie Hall," the titular character likes to smoke a joint at bedtime because, she says, it relaxes her and helps get her in the mood for sex -- even though her boyfriend claims it cheapens the experience. Although there's a difference between dependency and enhancement, Annie might have been on to something. Researchers are beginning to study the link between cannabis and sexual desire, with some interesting results. In one recent study, for example, investigators found that men and women who used marijuana daily had about 20% more sex during the previous four weeks than their peers who abstained from the drug.