With the legalization of medical and recreational marijuana, rates of use during pregnancy have steadily increased. At the same time, public health messages have failed to communicate the possible negative effects of marijuana on pregnancy and child outcome. This session will describe the action of marijuana on the developing fetal brain, its impact on maternal and infant mortality and morbidity, implications of a male’s use of marijuana on child outcome, and implications of prenatal marijuana exposure on the child’s neurodevelopment and will raise the question of family functioning when marijuana continues to be used as the child grows and matures.