CANNABIS USE

This study looks at whether allowing regular cannabis users to buy regulated cannabis from pharmacies helps them switch to safer ways of using it, like vaping or edibles, instead of smoking. About 1,177 participants in Switzerland are randomly assigned to buy from pharmacies or s…

This study tests a new mobile health program for young adults ages 18-29 who use cannabis frequently or use high-potency products. Participants receive personalized feedback and weekly text messages to reflect on their cannabis use and personal goals. The program aims to reduce t…

This study looks at how different warning labels on cannabis edibles packaging change what people know, how safe they think the product is, and whether they want to try it. About 1,250 adults in the U.S. will view packages with different warnings and answer questions. The goal is…

This study looks at how the labels and marketing claims on cannabis products affect what people think about the product's risks and effects. About 2,000 adults in states where recreational cannabis is legal will answer online survey questions after viewing a cannabis advertisemen…

This study looks at how cannabis use changes natural brain chemicals in adolescents aged 14 to 25. Researchers will measure cannabinoid and endorphin levels in blood to find markers that could tell which teens might relapse and which stay sober. The goal is to better understand c…

This study looks at whether young adults (ages 21-25) who use high-potency cannabis concentrates can improve their memory and thinking by switching to less potent products. Researchers will test participants' cognitive performance and collect blood and urine samples. The goal is …

This study was designed to find out if people who use cannabis regularly need different amounts of sedation drugs during oral surgery. It planned to compare sedation needs between cannabis users and non-users having teeth extracted. However, the study was withdrawn before enrolli…

This study looks at tobacco, cannabis, and other drug use among homeless and at-risk youth in downtown Ottawa. Researchers will follow 520 participants aged 16 and older who are homeless or insecurely housed and have a history of cannabis use and mental illness. The goal is to un…

This study looks at how different patterns of cannabis use (like how often, how long, and what type) affect anesthesia needs and inflammation in people having lumbar spine surgery. Researchers will measure the amount of anesthesia and pain medication needed during surgery, as wel…

This study tests whether a digital web application can help regular cannabis users adopt protective strategies 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 compl…

This study looks at how cannabis (marijuana) affects the levels of HIV medications in the blood and brain, as well as mood and thinking. Researchers will give cannabis or a placebo to 40 people with HIV to see if it changes how their drugs work. The goal is to understand if canna…