CANNABIS USE

This study tests a free online curriculum called Smart Talk, designed to teach middle and high school students about cannabis and discourage its use. Over 10,000 students will take part, and researchers will measure whether the program changes their cannabis use and intentions. T…

This study will test a mobile app designed to help adult cannabis users in Quebec adopt safer behaviors and reduce potential harms. Researchers will enroll 110 participants who use cannabis for non-medical reasons. The app provides strategies to promote responsible use, and the s…

This study will work with 25 pregnant and postpartum people to create a program that helps them quit tobacco and cannabis. The program focuses on treating depressive symptoms, which can make quitting harder. The goal is to see if this approach is acceptable and helps people stay …

This study looks at whether cannabis can help veterans who have PTSD and thoughts of suicide. About 500 veterans who have used cannabis in the past year will be randomly assigned to different groups. Researchers will track changes in PTSD symptoms, mood, and suicide risk over tim…

This study looks at how different warning labels on cannabis edibles change people's knowledge, safety concerns, and willingness to try them. About 1,250 English-speaking adults in the U.S. will view packaging with various warnings and answer questions. The goal is to find out wh…

This study will follow 90 people hospitalized with methamphetamine-induced psychotic disorder, comparing those who have also used cannabis to those who haven't. Researchers will track their psychiatric symptoms, insight, and sleep quality weekly for eight weeks. The goal is to un…

This study looks at whether teaching people with eating disorders about the effects of cannabis on their mental health and treatment can increase their knowledge and desire to cut back. About 80 participants will get either cannabis education or sleep education during their 20-we…

This study aims to develop and test a brief online program for young adult couples (ages 18-29) who use both alcohol and cannabis. The program includes self-paced modules over 3-5 weeks to reduce substance misuse and improve relationship skills. Researchers will compare couples w…

This study looks at how beta-myrcene, a compound found in cannabis, affects the body's response to THC. Researchers will give 32 healthy adults vaporized THC with or without beta-myrcene and measure drug effects and sleepiness. The goal is to understand how these compounds intera…

This study looks at how mood, behavior, and brain activity change in young adults (ages 18-21) who use cannabis. Researchers will use brain scans and questionnaires to understand why some people respond differently to the same drug. The goal is to learn more about individual diff…

This study looks at how a moderate dose of THC (the active part of cannabis) affects mood, stress, and thinking in adults who use cannabis at least once a week. Ninety participants will each have two lab sessions—one with active cannabis and one with a placebo—and complete memory…

This study looks at how different doses of THC (the active ingredient in cannabis) affect eye movements and attention in people who use cannabis often versus rarely. Researchers will give 40 healthy adults either a placebo, a low dose, or a high dose of THC and test their eye con…

This study aims to create and test a program that teaches family members new ways to talk to their young adult loved one who has psychosis and uses cannabis heavily. The goal is to help families communicate better, reduce stress, and possibly encourage their loved one to cut back…