Although marijuana is known to have potential therapeutic benefits, it has also been found to have an impact on birth outcomes, including preterm delivery and fetal growth restrictions. In a recent study published in Drug and Alcohol Dependence, doctoral student Sehun Oh, professor Diana DiNitto and colleagues found that from 2005 to 2014, marijuana use prevalence among unmarried pregnant women increased from 5.4 to 10 percent while it remained stable among
married women (mostly under 1.5 percent). The trend among unmarried women was associated with lower disapproval of marijuana use, and past-year anxiety and depression.