Figure 1.

Overview of developmental effects associated with prenatal cannabis and cigarette exposure in human subjects. Data compiled from two longitudinal studies Ottawa Prenatal Prospective Study and Maternal Health Practices and Childhood Development Project that followed offspring from mothers who used marijuana or cigarettes during pregnancy that are representative of other epidemiological studies. Maternal cannabis and cigarette use is clearly associated with neurobehavioral disturbances that persist into adulthood. Overall, in utero cannabis and cigarette exposure is characterized by impaired cognitive functioning, impulsivity, hyperactivity, and increased risk of developing an addiction disorder.