According to a new study, regular marijuana users have about 20 percent more sex than abstainers. The study, carried out by researchers at Stanford University, analysed data from 28,000 female and 23,000 male participants in a national study of Americans between the ages of 15 to 49. The found that women who smoked marijuana daily had sex with a male partner an average of 7.1 times per month, compared to 6 times per month for nonsmoking women. And similarly, male marijuana users reported having sex with a woman 6.9 times per month, compared to 5.6 times for nonusers. These findings were found to be true even after the researchers accounted for demographic variables known to affect sex habits and marijuana use. Furthermore, the study also found that there was a "dose-dependent relationship" between marijuana use and sex frequency — as respondents' marijuana use rates increased, so did their frequency of having sex. To find out more check out Association Between Marijuana Use and Sexual Frequency in the United States: A Population-Based Study.