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Aims: Drug policy strategies and discussions often use prevalence of drug use as a primary performance indicator. However, three other indicators are at least as relevant: the number of heavy users, total expenditures and total amount consumed. This paper stems from our efforts to develop annual estimates of these three measures for cocaine (including crack), heroin, marijuana and methamphetamine in the United States., Methods: The estimates exploit complementary strengths of a general population survey (National Survey on Drug Use and Health) and both survey and urinalysis test result data for arrestees (Arrestee Drug Abuse Monitoring Program), supplemented by many other data sources., Results: Throughout the 2000s US drug users spent in the order of $100 billion annually on these drugs, although the spending distribution and use patterns changed dramatically. From 2006 to 2010, the amount of marijuana consumed in the United States probably increased by more than 30%, while the amount of cocaine consumed in the United States fell by approximately 50%. These figures are consistent with supply-side indicators, such as seizures and production estimates. For all the drugs, total consumption and expenditures are driven by the minority of users who consume on 21 or more days each month., Conclusions: Even for established drugs, consumption can change rapidly. The halving of the cocaine market in five years and the parallel (but independent) large rise in daily/near-daily marijuana use are major events that were not anticipated by the expert community and raise important theoretical, research, and policy issues., (© 2014 Society for the Study of Addiction.)

Discussions about reducing the harms associated with drug use and antidrug policies are often politicized, infused with questionable data, and unproductive. This article provides an overview of a nonpartisan primer that should be of interest to those who are new to the field of drug policy, as well as those who have been working in the trenches. It begins with an overview of problems and policies related to illegal drugs in the United States, including the nonmedical use of prescription drugs. It then discusses the efficacy of U.S. drug policies and programs, including long-standing issues that deserve additional attention. Next, the article lists the major funders of research and analysis in the area and describes their priorities. By highlighting the issues that receive most of the funding, this discussion identifies where gaps remain. Comparing these needs, old and new, to the current funding patterns suggests eight opportunities to improve understanding of drug problems and drug policies in the United States: (1) sponsor young scholars and strengthen the infrastructure of the field, (2) accelerate the diffusion of good ideas and reliable information to decisionmakers, (3) replicate and evaluate cutting-edge programs in an expedited fashion, (4) support nonpartisan research on marijuana policy, (5) investigate ways to reduce drug-related violence in Mexico and Central America, (6) improve understanding of the markets for diverted pharmaceuticals, (7) help build and sustain comprehensive community prevention efforts, and (8) develop more sensible sentencing policies that reduce the excessive levels of incarceration for drug offenses and address the extreme racial disparities.