Study Reveals Risks of Concurrent Alcohol and Cannabis Use Among Young Adults

Wed 10th Sep, 2025

A recent study from York University's Department of Psychology has highlighted the potential dangers associated with the combined use of alcohol and cannabis among young adults. The research indicates that individuals facing elevated levels of stress, anxiety, and depressive moods are more likely to engage in binge drinking alongside cannabis consumption, which can lead to negative life outcomes.

With the legalization of cannabis in Canada, its use among young adults has surged, prompting researchers to investigate the implications of simultaneous substance use. The study, led by Associate Professor Jeffrey Wardell, emphasizes the importance of understanding the reasons behind such combined use and the resultant consequences.

Wardell notes that the adolescent brain continues to develop well into a person's twenties, making this demographic particularly vulnerable to dependencies on substances like alcohol and cannabis. While occasional combined use might not pose significant risks, the findings suggest that regular use can heighten the likelihood of adverse effects.

The researchers recruited 151 participants aged between 19 and 25, all of whom had prior experience with both cannabis and alcohol. Over the course of the study, participants completed daily surveys on their consumption patterns and any negative repercussions they experienced. These assessments were conducted over three separate 21-day periods, spaced six months apart, allowing for a thorough analysis of their habits.

The results demonstrated a clear correlation between mental health symptoms--such as anxiety and depression--and the motivation to use both substances concurrently. Many participants indicated that during times of emotional distress, they were inclined to increase their intake of both alcohol and cannabis, believing it would provide them with relief.

Wardell pointed out that while substances might offer temporary comfort, they can lead to long-term negative outcomes, affecting both mental health and overall life circumstances. Alternative coping strategies, such as mindfulness techniques, physical exercise, and seeking support from friends or professionals, may provide healthier ways to manage stress.

Wardell further emphasized that the young adult stage is critical for intervention. Early identification and support can help prevent the establishment of harmful substance use patterns. He advocates for awareness and education on the potential risks of substance use, encouraging young adults to evaluate their habits and seek assistance when necessary.

This study underscores the significance of understanding the interplay between mental health and substance use, particularly in the context of young adults who are navigating the complexities of adulthood.


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