Marijuana Use, Availability, and Production
MPP handouts, reports, briefing papers, etc.
Outside reports, studies, etc.
Antededents and Outcomes of Marijuana Use Initiation During Adolescence - While federal officials regularly note with alarm that marijuana use is associated with poor grades, this study suggests that poor grades may be a cause of teen marijuana use, not the result. Interestingly, school grades were often a stronger predictor of future marijuana use than were attitudes or beliefs about marijuana.
Youth Risk Behavior Surveillance -- United States - This biennial Centers for Disease Control survey of U.S. high school students looks at a variety of behaviors that might put young people at risk, including behaviors related to violence, sex, alcohol, and drugs.
Understanding the Motivations for Recreational Marijuana Use Among Canadians - Conducted by researchers from the University of Alberta, this ethnographic study of 41 adult Canadian marijuana users found that there is no such thing as a "typical marijuana user."
Toward a Global View of Alcohol, Tobacco, Cannabis, and Cocaine Use: Findings From the W.H.O. World Mental Health Survey - The U.S. has some of the world's most punitive drug policies and also the world's highest rates of marijuana and cocaine use, according to this World Health Organization survey of 17 countries, conducted by some of the world's leading substance abuse researchers.
Risk For Initiation of Substance Use as a Function of Age of Onset of Cigarette, Alcohol and Cannabis Use: Findings in a Midwestern Female Twin Cohort - What is the real "gateway drug"? This study of twins suggests that use of any drug by young people is an early warning signal that later use of other drugs is likely, with alcohol and cigarettes commonly coming before marijuana or other illicit drugs.
Marijuana Production in the United States - This report -- based on U.S. government data -- details the enormous volume of marijuana harvested and sold untaxed in the U.S., where in 2006 it was the country's number one cash crop, worth more than the corn and wheat crops combined.
Lost Taxes and Other Costs of Marijuana Laws - With the estimated retail value of the U.S. marijuana market at $113 billion, the local, state, and federal governments are forgoing $31.1 billion in potential sales tax each year. At the same time, marijuana arrests cost taxpayers $10.7 billion annually.
Evidence-Based Answers to Cannabis Questions - This 60-page report is an evidence-based literature review of marijuana, based only upon research that followed well-accepted research designs, included strong statistical and procedural controls, and passed a careful review by independent scientists.
Drug Misuse Declared: Findings From the 2006/07 British Crime Survey - A year after the 2005-06 survey listed below, this British government survey tracks the continuing drop in marijuana use by both adults and teens after Britain ended most marijuana possession arrest in 2004, with marijuana use in the past year reaching its lowest level in more than a decade.
Drug Misuse Declared: Findings From the 2005/06 British Crime Survey - When Britain legally downgraded marijuana in 2004, ending arrests for most marijuana possession cases, critics complained that the move would encourage marijuana use, particularly among young people. This official British government survey -- one of an annual series -- charts a continuing drop in overall drug use, and a significant drop in the use of marijuana, particularly by young people.
Contrasting Models of Genetic Co-Morbidity For Cannabis and Other Illicit Drugs in Adult Australian Twins - In this examination of the gateway theory, researchers studied more than 4,000 Australian twins whose use of marijuana and other drugs was followed in detail from adolescence into adulthood and matched the real-world data from the twins to mathematical models based on 13 different explanations of how use of marijuana and other illicit drugs might be related.
Cannabis and Other Illicit Drugs: Comorbid Use and Abuse/Dependence In Males and Females - The gateway theory suggests that marijuana use leads to use of hard drugs like heroin and cocaine. This study suggests that underlying genetic and environmental factors -- not marijuana use -- are what encourage use of marijuana and other drugs.
MPP op-ed columns
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