On April 26, the United States reclassified cannabis from a Schedule I controlled substance, which lacks any medical benefits, to a Schedule III controlled substance, which has accepted medical uses and lower potential for ...
Jun 5, 2026
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Teens may turn to marijuana use for many reasons: curiosity, stress relief, peer pressure, help with mental health, or for the positive feelings of being "high." However, there is a difference between casual use and reliance ...
May 18, 2026
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New research from the Institute of Psychiatry, Psychology & Neuroscience (IoPPN) at King's College London has highlighted the distinct and shared molecular pathways linking cannabis use disorder (CUD) and psychosis, offering ...
May 13, 2026
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A new multisite study published in Nature Mental Health found that using cannabis and tobacco together increases the risk of developing psychotic disorders like schizophrenia among those considered high risk.
May 13, 2026
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A new meta-analysis of 55 studies involving more than 3 million people has found that 31% of individuals with cannabis use disorder (CUD) also struggle with major depressive disorder (MDD). While a link between these two ...
For people with an addiction, craving—the strong desire for a substance—can affect their decision-making, new research shows. And how craving affects a decision can depend on what's at stake. The finding, published in Nature ...
Mar 30, 2026
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A landmark paper published in Lancet Psychiatry—the largest-ever review of the safety and efficacy of cannabinoids across a range of mental health conditions—found no evidence that medicinal cannabis is effective in treating ...
Mar 16, 2026
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The frequency of substance use, early age of initiation, and cannabis-related memory impairments are among the primary factors contributing to driving under the influence, according to a new analysis using machine learning. ...
Mar 13, 2026
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A new study led by Marie-Pierre Sylvestre, professor at the Université de Montréal School of Public Health, examines cannabis use four to five years after Canadian legalization by adopting a different perspective: Rather ...
Feb 19, 2026
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A new study led by Boston College School of Social Work Professor Summer Sherburne Hawkins found that recreational cannabis legalization in the United States is driving increases in cannabis use among adults with historically ...
Jan 21, 2026
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