Recent research suggests that teenage cannabis use could have serious implications for brain development, with findings showing that early users may experience thinning of the cerebral cortex, the outermost layer of the brain. Conducted by scientists from the Université de Montréal, the study reveals potential long-term risks associated with early cannabis consumption, a topic that is generating concern among health professionals.
Key Findings on Cerebral Cortex Changes
The cerebral cortex, responsible for cognitive functions such as memory, reasoning, and decision-making, appeared thinner in teenagers who had started smoking cannabis before the age of 16. Dr. Tomas Paus, a psychologist and co-author of the study, explained that tetrahydrocannabinol (THC) — the psychoactive compound in cannabis — may contribute to these structural changes, which could potentially affect cognitive development and learning ability.
Why It Matters
- Cognition and Memory: The cerebral cortex plays a crucial role in processing complex thoughts and memories, meaning changes here could impact overall cognitive function.
- Increased Vulnerability: Dr. Paus noted that these changes might make the adolescent brain more susceptible to various challenges, potentially hindering the ability to learn new skills, interact socially, and adapt to changing environments.
Rising Concerns Over Cannabis Use in Youth
Cannabis usage among young people continues to rise, with nearly 15% of 16 to 24-year-olds in the UK reporting use within the past year. In the U.S., where cannabis is legalized in many states, medical professionals have noted a spike in cases of adverse side effects linked to chronic use, including a phenomenon called “scromiting” — simultaneous screaming and vomiting episodes.
Increased Risk of Psychotic Disorders
The Université de Montréal study builds on previous research indicating that cannabis use among adolescents can double the risk of developing psychotic disorders later in life. A 2007 study found that teens who had smoked cannabis at least five times were twice as likely to develop psychosis over the following decade compared to non-users.
Implications for Young Users and Families
This latest research adds weight to existing concerns around cannabis legalization and its impact on youth. The possibility of long-term cognitive and mental health consequences makes understanding and monitoring cannabis use in adolescence increasingly important for families, schools, and healthcare providers.
