Feasibility and acceptability of a physical activity intervention to reduce prenatal cannabis use: results of an open pilot trial

New research continues to back up what many of us already know from experience: people are more likely to make changes when they feel supported, understood, and not judged. A recent pilot study looked at whether a simple, supportive physical activity program could help pregnant individuals reduce cannabis use. Instead of focusing on rules or pressure, the approach centred on small, realistic changes, regular check-ins, and attention to mental health and overall wellbeing.

Participants responded positively to this approach. Many reduced or stopped cannabis use over time, and several reported feeling better emotionally as well. What stood out most was how much people valued the sense of encouragement and accountability, and the fact that the conversations felt safe and respectful. While the study was small, it adds to growing evidence that prevention works best when it supports the why behind substance use, not just the behaviour itself.

Reflection for Prevention Conversation Facilitators

This research will likely feel very familiar to Prevention Conversation Facilitators. It reflects what shows up again and again in practice: meaningful change happens through trust, relationship, and realistic options. People don’t need to be convinced or corrected, they need space to talk, to feel heard, and to explore what might work for them.

The study also reinforces an important truth: substance use during pregnancy is often about coping. Stress, anxiety, pain, sleep, and feeling overwhelmed all play a role. When prevention conversations acknowledge this complexity and respond with compassion, they open the door to change.