"Marijuana use is very common, but its large-scale use and association with sexual frequency hasn't been studied much in a scientific way", Eisenberg said.
Survey participants were quizzed on how often they engaged in heterosexual intercourse over the last month, as well as how frequently they consumed cannabis in the previous year.
Researchers examined the lifestyles of more than 50,000 American men and women between the ages of 25 and 45. The women who had not smoked weed in the past one year were found to have had sex 6.0 times on average in the last month in comparison with 7.1 times for the females who smoked up. Among men, nonusers had sex an average of 5.6 times, while daily users reported 6.9 sexual encounters.
For the study, Eisenberg and Sun analysed data going back to 2002 from the annual US National Survey of Family Growth which contains information regarding family structures, sexual practices and childbearing from a sample created to represent the demographics of the American population.
Study finds frequent marijuana use doesn't impair sexual motivation or performance but rather increases coital frequency.
With marijuana becoming legal in more states, Dr. Michael Eisenberg, an assistant professor of urology, wanted to see if there was a correlation between smoking marijuana and sexual activity. Studies in the past have shown that weed use can lead to erectile dysfunction and lower sperm counts in men.More news: 'Alarming Study' on Chemicals in Baby Food Lacks Evidence
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That seems to indicate that the association can't be explained away by saying that people with fewer inhibitions are likely to both smoke pot and frequently engage in sex, Eisenberg said.
To arrive at an accurate determination of marijuana's effect on intercourse frequency, Eisenberg and Sun turned to the National Survey of Family Growth, sponsored by the federal Centers for Disease Control and Prevention.
As such, a fair amount of other research has found a link between the frequency of sex and overall physical and mental health. The trend remained true even for weed smokers who also consumed other substances like alcohol and cocaine. "This was across the board: marital status, race, none of that mattered".
The study is the first to evaluate the relationship between cannabis use and frequency of sex at the national level in the United States.
That said, research shows that the average couple has sex roughly once a week.
Dr Eisenberg cautioned the study should not be misinterpreted as having proven a causal link.