Obstet Gynecol. 2017 Oct;130(4):931-932. doi: 10.1097/AOG.0000000000002349.
Cannabis sativa (marijuana) is the illicit drug most commonly used during pregnancy. The self-reported prevalence of marijuana use during pregnancy ranges from 2% to 5% in most studies. A growing number of states are legalizing marijuana for medicinal or recreational purposes, and its use by pregnant women could increase even further as a result. Because of concerns regarding impaired neurodevelopment, as well as maternal and fetal exposure to the adverse effects of smoking, women who are pregnant or contemplating pregnancy should be encouraged to discontinue marijuana use. Obstetrician-gynecologists should be discouraged from prescribing or suggesting the use of marijuana for medicinal purposes during preconception, pregnancy, and lactation. Pregnant women or women contemplating pregnancy should be encouraged to discontinue use of marijuana for medicinal purposes in favor of an alternative therapy for which there are better pregnancy-specific safety data. There are insufficient data to evaluate the effects of marijuana use on infants during lactation and breastfeeding, and in the absence of such data, marijuana use is discouraged.
大麻（ marijuana）是孕期最常使用的非法药物。在大多数研究中，自我报告的孕期大麻使用率在2%至5%之间。越来越多的州将大麻用于医疗或娱乐用途合法化，这可能会导致孕妇使用大麻的情况进一步增加。由于担心神经发育受损，以及孕妇和胎儿接触吸烟的不良影响，应鼓励怀孕或计划怀孕的女性停止使用大麻。应劝阻妇产科医生在孕前、孕期和哺乳期为医疗目的开具或建议使用大麻。应鼓励孕妇或计划怀孕的女性停止为医疗目的使用大麻，转而采用有更完善的针对孕期安全性数据的替代疗法。目前尚无足够数据评估哺乳期和母乳喂养期间使用大麻对婴儿的影响，在缺乏此类数据的情况下，不鼓励使用大麻。
