title: Cannabis policy and the uptake of treatment for cannabis-related problems.
abstract: We examine public health effects of steps towards more permissive cannabis policies introduced in Belgium, Finland, France and Portugal between 1999 and 2004. Public health effects are captured in terms of cannabis-induced treatment uptake as reported by the European Monitoring Centre for Drugs and Drug Addiction.
  
  
  
  We use a quasi-experimental difference-in-differences design drawing on observational data.
  
  
  
  While the number of clients with primary cannabis problems per reporting treatment unit has generally increased, this increase does not seem to be substantially stronger in the countries that introduced more permissive cannabis policies.
  
  
  
  The specific reforms carried out in the group of reforming countries can thus not be shown to have had adverse effects on public health in terms of treatment uptake.
authors.affiliation: Department: Geschwister Scholl Institute for Political Science, LMU Munich, Munich, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Adam
authors.affiliation: Department of Politics and Management, University of Konstanz, Konstanz, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Raschzok
mesh_terms: D005060:Europe; D006291:Health Policy; D006801:Humans; D002189:Marijuana Abuse / Q000150:complications / Q000453:epidemiology / Q000534:rehabilitation*; D008385:Marijuana Smoking / Q000009:adverse effects* / Q000453:epidemiology; D011634:Public Health
keywords: cannabis; drug abuse; public policy