Study: Women Who Use Cannabis While Trying to Get Pregnant Are Less Likely to Conceive

Using cannabis while trying to conceive could reduce a woman’s chance of getting pregnant, according to new research from the National Institutes of Health.

Data was examined for more than 1,200 women aged 18 to 40 who had experienced pregnancy losses.

The women were part of a larger group trying to conceive after one or two prior miscarriages. Women who said they used cannabis products — marijuana or hashish — in the weeks before pregnancy, or who had positive urine tests for cannabis use, were around 40% less likely to conceive per monthly cycle than women who did not use cannabis. The authors noted that although the findings suggest cannabis could affect women’s fertility, they should be tempered with caution as the study observed a relatively small number of cannabis users. However, the authors say their results suggest that women trying to conceive should exercise caution with cannabis use until more definitive evidence is available.

One potentially important factor — cannabis use among the women’s partners — was not analyzed.


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