Cannabis Legalization & Problematic Use: New Study Findings
- Basel, Switzerland - A new study from Basel indicates that providing legal access to cannabis may led to a decrease in problematic consumption.
- The research, a collaboration between the Addiction Department of the Department of health of the Canton of basel-Stadt, the University of Basel, the University psychiatric Clinics Basel (UPK)...
- Lavinia Baltes-Flückiger, deputy head of the study at the Psychiatric Services Aargau, emphasized the study's unique design.
Groundbreaking research from Basel reveals that legal access to cannabis may lead to reduced problematic use. The Weed Care study, published in the journal Addiction, examined the effects of legal cannabis supply on consumption habits and mental health, showing a decrease in problematic cannabis use among participants with legal access. This controlled study found no worsening of mental health symptoms, a significant finding for those concerned about cannabis legalization’s impact. News Directory 3 brings you the latest updates on this critical study. Researchers continue monitoring participants for long-term data on the benefits and risks.Discover what’s next as this study progresses.
Legal Access to Cannabis Linked to Reduced problematic Use, Study finds
Updated June 19, 2025
Basel, Switzerland – A new study from Basel indicates that providing legal access to cannabis may led to a decrease in problematic consumption. The Weed Care study, which began in January 2023, examined the effects of legal cannabis supply on consumption patterns and mental health among nearly 370 participants.
The research, a collaboration between the Addiction Department of the Department of health of the Canton of basel-Stadt, the University of Basel, the University psychiatric Clinics Basel (UPK) and Psychiatric Services Aargau, divided participants into two groups. One group could purchase legal cannabis from pharmacies, while the other continued to rely on the black market. Researchers then monitored their consumption and mental state.
Dr. Lavinia Baltes-Flückiger, deputy head of the study at the Psychiatric Services Aargau, emphasized the study’s unique design. “There has never been a controlled, randomized study like this before,” she said. The findings, published in the journal Addiction, suggest a positive shift in consumption habits.
The study defined problematic cannabis use as consumption that leads to health, social, or psychological difficulties. the group with legal access showed a slight decrease in this type of consumption. Notably, individuals who used other drugs in addition to cannabis experienced a more significant drop in problematic cannabis use.
Furthermore, the study addressed concerns that legalization might worsen mental health. After six months,no significant differences in depression,anxiety,or other psychopathological symptoms were observed between the two groups.
After the initial six-month period, the control group also gained legal access to cannabis. Professor Marc Walter from the University of Basel and Psychiatric Services Aargau, head of the study, noted that an interim assessment after two years showed improvements in the mental state of participants. “Legal access eases the burden on consumers,” Walter said.
What’s next
Researchers plan to continue monitoring participants to gather more long-term data on the effects of legal cannabis access on both consumption and mental well-being.The ongoing study aims to provide further insights into the potential benefits and risks associated with cannabis legalization and inform policy decisions.