Women who use marijuana could have a harder time conceiving than women who don't, a study concludes.
According to a study conducted by the National Institutes of Health (NIH), cannabis users were about 40 percent less likely to conceive during each cycle.
Published in the journal Human Reproduction, the findings come from analysis of a larger study of about 1,200 women ages 18 to 40. All were trying to conceive and participated in the study for up to six cycles.
