Researchers at the Stanford University School of Medicine found that marijuana users have approximately 20 percent more sex than their counterparts.
The survey explicitly queries respondents on how many times they have had intercourse with a member of the opposite sex in the past four weeks, and how frequently they have smoked marijuana over the past 12 months. At this time, 29 states have declared marijuana legal for recreational or medicinal purposes, and estimates suggest that more than 22 million Americans use pot, the researchers said in background information. "So over the course of a year, they're having sex maybe 20 more times".
The study asked 50,000 men and women how many people they had slept with, and how often they've smoked weed over the past year.
Women who consumed cannabis every day had sex an average of 7.1 times during the previous four weeks, while women who hadn't used cannabis in a year had sex an average of 6.0 times in the previous month. Women who did not use weed at all ad sex an average of 6 times monthly, while non-smoking men had sex 5.6 times a month.
A key distinction: The study does not establish a causal connection between cannabis use and sexual activity. "If anything, it's associated with increased coital frequency", he said.
The study is the first to examine the relationship between marijuana use and frequency of sexual intercourse at the population level in the United States.
As such, a fair amount of other research has found a link between the frequency of sex and overall physical and mental health. "However, the fact that the association persists for all the subgroups - age, marital status, education, religion, etc. - suggests that there may be some biological explanation". In addition, coital frequency rose steadily with increasing marijuana use, a dose-dependent relationship supporting a possible active role for marijuana in fostering sexual activity. He said this independence suggests the positive correlation can not be attributed to a general tendency of people with fewer inhibitions to indulge in both drugs and more sex than their peers.