CANNABIS

This study compares the health and social effects of buying regulated cannabis from Swiss pharmacies versus buying it on the illegal market. About 1,177 regular cannabis users are randomly assigned to either group and followed for 6 months. The goal is to see if pharmacy access e…

This study tests whether a non-invasive brain stimulation technique called TMS can reduce cannabis use and cravings in heavy users. Fifty near-daily cannabis users who want to cut down will receive either real or fake TMS over two weeks. Their cannabis use and brain responses to …

This study looks at whether cannabis oil can help reduce pain and improve sleep in people with fibromyalgia who have not found relief from other treatments. About 65 adults will take cannabis oil, and researchers will track pain levels, side effects, and how well patients follow …

This study tested whether inhaling cannabis can quickly relieve migraine pain. Twenty adults with migraines tried three different strengths of cannabis and a placebo (fake cannabis) to see which worked best. The goal was to find a fast-acting treatment for migraine attacks.

This study looks at how alcohol and cannabis, alone or together, affect driving ability and thinking in a safe, simulated setting. About 40 occasional users aged 21-55 will complete driving tests and questionnaires. The goal is to better understand the risks of driving under the …

This study tests whether a combined approach of stricter enforcement and staff training can reduce marijuana sales to obviously-intoxicated customers in Oregon. Researchers will send actors pretending to be drunk to marijuana stores and nearby alcohol sellers to see if they are r…

This study looks at whether quitting cannabis for 42 days can improve memory, attention, and mood. Researchers will use 100 identical twins who both use cannabis regularly. One twin will be asked to stop using cannabis with support, while the other continues as usual. The goal is…

This study looks at how cannabinoids (the active chemicals in cannabis) affect short-term and long-term memory. Researchers will test memory in 80 adults aged 18–55 who have used cannabis at least once. The goal is to understand, not to treat, so no new therapies are being tested…

This study looks at how alcohol and cannabis, alone or together, affect driving ability and mental skills in a driving simulator. About 40 adults aged 21 to 55 who have used both substances before will take part. The goal is to better understand the risks of driving under the inf…

This study looks at how alcohol and cannabis affect driving and thinking in a safe, simulated setting. About 40 occasional users of both substances will take part. The goal is to understand the risks of driving under the influence, not to test a treatment.

This study looks at how daily cannabis smoking changes pain sensitivity and the risk of becoming dependent. Researchers will test 16 healthy cannabis users in a controlled hospital setting, measuring pain responses and withdrawal symptoms. The goal is to understand if cannabis ca…

This study looks at how using cannabis every day for two weeks affects pain, the risk of addiction, and natural cannabis-like chemicals in the body. One hundred healthy adults who already use cannabis nearly daily will stay in a hospital for 15 days and receive cannabis with diff…

This study looks at how alcohol and cannabis, alone or together, affect driving ability and thinking in a safe, simulated setting. About 40 adults aged 21 to 55 who have used both substances before will take part. The goal is to better understand the risks of driving under the in…