Allen AM, et al. - Researchers examined how stressful life events (SLEs) in the year prior to childbirth are associated with (1) prepregnancy cannabis use, (2) cessation of cannabis use during pregnancy, and (3) postpartum relapse to cannabis use. The PRAMS, 2016, a cross-sectional, population-based surveillance system yielded data of women (n = 6,061) who delivered a live infant within the last 6 months and had data on cannabis use. Prepregnancy cannabis use was reported in 16.4% (997/6,061) of respondents; of these, 36.4% (363/997) reported continual use of cannabis during pregnancy. Among the 63.6% (634/997) who did not report use during pregnancy, cannabis use relapse in 23.2% (147/634) during the postpartum. As per observations, stressful life events during the year prior to childbirth seem to be associated with higher odds of women's cannabis use during the perinatal period, particularly during prepregnancy. Two SLEs (husband/partner said they didn't want pregnancy; husband/partner or mother went to jail) were noted to be significantly associated with the odds of postpartum relapse to cannabis.