Men who smoke pot daily are four times more likely to have trouble climaxing than men who don't light up, according to the La Trobe University study. The study also found that men who smoke pot are more likely to experience premature ejaculation than other men.

Professor Anthony Smith said despite the effect pot-smoking has on men's sex lives, smokers did not always consider the issues to be "sexual health problems." "The findings suggest that men are self-medicating with cannabis to delay orgasm," said Smith, from the Melbourne-based university's Australian Research Center in Sex, Health and Society. "While many male smokers experienced sexual problems, they also reported more partners than non-smokers."