Cannabis & Tobacco Co-Use Lower Cognitive Scores in Teens

Summary: A new study filled a critical diagnostic gap regarding substance use during the early warning phases of mental illness. Investigating adolescents and young adults at clinical high risk for…

Combining Cannabis and Tobacco Triples Psychosis Risk

Summary: A multi-site study reveals that combining cannabis and tobacco, a trend known as “co-use”, significantly increases the long-term risk of developing full psychotic disorders like schizophrenia. The study tracked…

Teenage Cannabis Use Linked to 52% Higher Schizophrenia Risk

Summary: New research reveals a striking age-dependent link between cannabis use and mental health. The study found that teenagers with cannabis use disorder (CUD) face a significantly higher risk of…

Stress Levels Predict Cannabis Use

Summary: New research shows that rats with naturally higher baseline stress hormone levels are significantly more likely to self-administer cannabis vapor. Over several weeks, rats were allowed to nose-poke for…

Genes Linked to Cannabis Use Reveal Ties to Mental Health

Summary: Researchers analyzing data from over 130,000 participants have identified specific genes associated with cannabis use and its frequency, revealing strong links to psychiatric, cognitive, and physical health traits. The…

Genetic Link Between Cannabis Use Disorder and Mental Health

Summary: A large genetic study reveals that cannabis use disorder (CanUD) is strongly linked to increased risk for multiple psychiatric disorders, including depression, PTSD, ADHD, and schizophrenia. By analyzing global…

Legal Cannabis Linked to Less Problematic Use, Better Mental Health

Summary: The Weed Care study in Switzerland is investigating how legal access to cannabis affects users’ consumption and mental health. In the first randomized trial of its kind, participants buying…

Elevated Dopamine in Cannabis Users May Explain Psychosis Risk

Summary: New research reveals that people with cannabis use disorder (CUD) have elevated dopamine levels in a brain region associated with psychosis, such as schizophrenia. This may help explain why…

Cannabis Use Reduces Brain Activity in Key Memory Regions

Summary: A study of over 1,000 young adults reveals that both recent and heavy lifetime cannabis use reduce brain activity in regions critical for working memory, including the prefrontal cortex…

Alcohol Use Predicts Escalating Cannabis Vaping Among Youth

Summary: A recent study highlights alcohol as the strongest predictor of cannabis vaping initiation and experimentation among youth and young adults, regardless of demographic factors. Conducted over three years, the…