Dr. Manish Vira, vice chair for urologic research with the Arthur Smith Institute for Urology in NY, agreed that the study "provides compelling evidence that at the very least, regular marijuana use is not associated with decreased sexual desire or performance".
Instead, Eisenberg found that marijuana users are having about 20 percent more sex than people who abstain from the drug.
"We looked at associations between marijuana use and sexual frequency while accounting for important variables like age, education, and marital status, which also play a role", Michael Eisenberg, senior study author and director of male reproductive medicine and surgery at Stanford, told Seeker.
Nevertheless, Eisenberg cautioned, "It doesn't say if you smoke more marijuana, you'll have more sex". It asked over 28,000 women and almost 23,000 men about how often they had sex in the four weeks before the survey and how frequently did they use marijuana in the previous year.
Women who did not use cannabis within the past year reported that they had sex six times, on average, over the previous four weeks. 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.
The US National Institute of Drug Abuse estimates that over 20 million adult Americans use marijuana.
The research is an "impressive study because of its size", said Joseph Palamar, an associate professor of public health at New York University's Langone Medical Center, who studies drug use and sexual behavior and who was not involved in the new study. Eisenberg said, "It was pretty much every group we studied, this pattern persisted".
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The researchers factored in things such as alcohol or cocaine use, age, religion, having kids, and found that the link between pot and sex held.
That said, research shows that the average couple has sex roughly once a week.
Some 24.5 percent of men and 14.5 percent of women in the analysis reported having used marijuana, and there was a positive association between the frequency of marijuana use and the frequency of sexual intercourse. People who have more sex, on average, are happier and less stressed, they have lower blood pressure, and better cardiovascular health overall.
For years, marijuana has been linked with lethargy and even impotence, with people claiming that regular marijuana users may have a more hard time having sex. "There is some data in humans and rodents that show marijuana can affect arousal pathways".
"I wouldn't counsel patients necessarily one way or the other based on this", Eisenberg said.
The findings can be found published online in the Journal of Sexual Medicine.
A key closing distinction: The study does not establish a causal connection between cannabis use and sexual activity-there's no evidence cannabis users are getting high and getting busy in one fell swoop.