After two years, a legal recreational cannabis study known as "Weedcare", carried out in Basel in northwestern Switzerland, has been given a positive assessment. The 300 participants in the experiment to assess the benefits of regulating the supply of the recreational drug were in better mental health than before it began, and addictive behaviour has improved, say officials. +Get the most important news from Switzerland in your inbox Over the course of the two-year "Weedcare" recreational cannabis study, depressive symptoms and anxiety decreased among the participants, Basel City's Department of Health reported on Friday. They also showed less addictive behaviour. However, their level of cannabis consumption remained unchanged over the two years: neither the number of days on which cannabis was consumed nor the amount of cannabis. CHF900,000 worth of cannabis A total of 87 kilograms of cannabis were sold in Basel in the first two years of the study, valued at CHF900,000 on the ...