The use of cannabis is generally more prevalent among youth, with 39.3% of 15- to 17-year-olds and 69.9% of 18- to 19-year-olds reporting lifetime This is the second in a series of use. [...] Approximately 46% of past-year cannabis of cannabis use on various aspects of human functioning and users in Canada aged 15 and older reported using cannabis two or fewer development. [...] Other reports in this series address the effects of A growing body of evidence suggests that cannabis use may negatively chronic cannabis use on cognitive impact several aspects of people’s lives, including mental and physical functioning and mental health, health, cognitive functioning, ability to drive a motor vehicle, and pre- cannabis use and driving, and respiratory effects of cannabis use. [...] In this report—the second in a series reviewing the effects of cannabis use on various aspects of human functioning and development (see Porath-Waller, 2009)—the effects of prenatal cannabis exposure on offspring birth outcomes, 1 Canadian Centre on Substance Abuse neurocognitive development, behaviour and Prevalence of Cannabis Use During mental health are explored. [...] Cannabis is the most frequently used illicit drug that is ingested during pregnancy, with 2.8% of Much of the available evidence on this topic pregnant women reporting past-month use in the originates from two prospective longitudinal cohort 2005 National Survey on Drug Use and Health in studies that mainly describe the United States (Substance the impact of heavy cannabis Abuse and Mental Health