New research shows that among people at clinical high risk for psychosis, cannabis and tobacco co-use was associated with lower cognitive performance compared to healthy controls. The novel study ...

Cannabis, commonly known as marijuana, is a plant that contains psychoactive compounds that can temporarily alter people's brain activity and perceptions. While the consumption of this plant for ...

Researchers analyzed 149 studies involving more than 71,000 people. Cannabis use was linked to earlier onset of psychosis, ...

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 ...

Using tobacco together with cannabis has been linked to a lower cognitive performance in people with high clinical risk for psychosis. The corresponding study was published in Biological Psychiatry: ...

It's 4/20 - but U.S. teens should avoid cannabis unless they want to stunt their brain development, according to a new study from California researchers. Teenagers who use cannabis in any way have a ...

Cannabis use among teenagers is linked to delayed cognitive development and worse memory over time, the largest US study to date showed. In an analysis of over 11,000 teenagers, cannabis use was ...

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 synthetic cannabinoids have been found in products sold in shops in Ireland, according to the HSE’s early warning ...

A sweeping review of over 8,000 participants reveals how cannabis use during the teenage years may reshape the developing brain, raising urgent questions about long-term risks and early intervention.