Led by Marie-Pierre Sylvestre, a professor at the School of Public Health at the Université de Montréal, the researchers drew on Quebec data from COMPASS, a pan-Canadian longitudinal study of the health behaviors of secondary ...
2 hours ago
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Cannabis is a psychoactive drug derived from the Cannabis sativa plant. Users can smoke the dried flowers and leaves as marijuana or make them into an oil or resin.
May 27, 2026
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Using psychoactive substances for recreation, socialization or symptom self-management is common for many people living with multiple sclerosis. When used to self-manage symptoms, some psychoactive substances may provide ...
May 19, 2026
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Adolescents in California consistently perceive cannabis as less harmful than other commonly used substances, according to a new study analyzing data from two large statewide school surveys. Shu-Hong Zhu, Ph.D., professor ...
May 6, 2026
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Researchers from University of California San Diego have found that microdosing—taking very small amounts of psychoactive substances—is more common among U.S. adults than previously recognized, with cannabis leading by a ...
May 4, 2026
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When the U.S. Department of Justice moved to reclassify medical marijuana to a Schedule III drug on April 23, 2026, it set the stage for a vast amount of medical research that has been hobbled for decades by its more restrictive ...
Apr 29, 2026
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Most people strongly support the federal government's reclassification of cannabis, according to a new study that used AI to analyze more than 40,000 comments in the public record. The findings by researchers at Johns Hopkins ...
Apr 29, 2026
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Lately, there has been a lot of focus on declining alcohol sales in North America, and speculation as to why that might be. Dr. Tim Naimi, an alcohol epidemiology researcher and director of the Canadian Institute for Substance ...
Apr 27, 2026
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Over the past 16 years, pediatric substance use-related visits (SUVs) to PEDSnet institutions have been increasing across all care settings and have increased at a greater percentage than visits overall, according to a comprehensive ...
Apr 25, 2026
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The US government on Thursday made it easier for Americans to use cannabis for medical reasons by reclassifying the drug and enabling more research into its safety and efficacy.
Apr 23, 2026
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