A recent study led by the University of Bath has revealed that regular cannabis use may pose significantly higher health risks for adolescents compared to adults. The research found that adolescents exhibited higher levels of cannabis use disorder and reported greater negative impacts on daily functioning. The estimated prevalence of cannabis use among youth in the United States is 7.1%, making it the second-most used substance after alcohol. In Australia, cannabis use prevalence is about 34% among young people aged 14 years and above.

Key findings from the study include heightened vulnerability to cannabis use disorder symptoms among adolescents, such as unsuccessful attempts at reducing or quitting, interference with daily obligations, worsening mental or physical health, and experiencing cravings, tolerance and withdrawal. Notably, this increased vulnerability was not solely attributable to adolescents using more or stronger cannabis than adults.

While most cannabis users may not experience serious long-term harms, approximately a quarter are thought to develop a cannabis use disorder, with adolescents showing greater susceptibility. Experts speculate that this vulnerability may be due to the ongoing brain development and higher neuroplasticity in adolescents, potentially making them more susceptible to the effects of psychoactive substances.

Crucially, the study highlighted a lack of awareness among adolescents about the symptoms of cannabis use disorder and a perception that cannabis carries a low level of risk for harm. Researchers emphasize the importance of increasing awareness among young people about the potential risks associated with cannabis use and encouraging them to consider ways to mitigate these risks, such as stopping or reducing use.