CANNABIS USE

This study looks at whether getting regulated cannabis from pharmacies helps people use it more safely compared to buying it illegally. About 1,177 regular cannabis users in Switzerland will be randomly assigned to buy from pharmacies or the illicit market. The goal is to see if …

This study looks at how cannabis use changes the body's natural endocannabinoid and opioid systems in adolescents aged 14 to 25. Researchers will measure cannabinoid and endorphin levels in blood to find biomarkers that may help predict which teens will relapse and which will sta…

This study looks at how cannabis use changes the amount of anesthesia needed during lumbar spine surgery and how it affects inflammation. Researchers will compare cannabis users and non-users to see if patterns like frequency or method of use impact pain, healing, and immune resp…

This study looks at how the way cannabis products are labeled and marketed changes what people think about them. About 2000 adults who have used cannabis a little or a lot will answer online surveys after seeing a product ad. The goal is to understand how labels affect perception…

This study looks at whether young adults (ages 21-25) who regularly use high-potency cannabis concentrates can improve their memory, attention, and other thinking skills by switching to less potent products. Researchers will track participants' cannabis use, collect blood and uri…

This study aimed to see if people who use cannabis need different amounts of sedation during tooth extraction. It planned to compare cannabis users with non-users. However, the study was withdrawn before any participants were enrolled, so no results are available.

This study looks at how cannabis use changes the levels of HIV medications in the blood and brain, and whether it affects mood and thinking. It involves 120 people in an observation phase and 40 people in a phase where they receive cannabis or a placebo. The goal is to understand…

This study looks at why homeless youth in Ottawa use tobacco, cannabis, and other substances together. Researchers will follow 520 at-risk youth aged 16 and older to understand their substance use patterns. Participants will receive a 6-month program with peer support and a menta…

This study tests whether a digital web application can help regular cannabis users adopt safer habits to lower cannabis-related risks. About 565 adults in Lausanne, Switzerland, who already take part in a cannabis sales regulation pilot, will use the app freely and complete surve…