Cannabis Users Mostly Ignore Health Warnings on Products and Doubt Their Accuracy

Cannabis consumers reported being unaware of or choosing to ignore health warnings on products they used. When presented with hypothetical warnings, many expressed disbelief about the accuracy of health claims. Personal experience with cannabis harms was the main factor in believing or disbelieving warnings. Participants requested cited sources, direct language, and enhanced visuals to improve warning effectiveness.

Twelve focus groups with 77 cannabis consumers aged 21+ (median age 42) who had used cannabis in the past 30 days and lived in states with legal recreational cannabis. Conducted February-March 2025. Participants first described warnings on products they used, then reacted to hypothetical health warnings.

If cannabis health warnings are not noticed or believed by the people they target, they are failing at their primary purpose. This study provides direct consumer feedback on how to make warnings more effective, including the key insight that evidence citations and visual elements matter more than text alone.

Tobacco health warnings went through decades of refinement to become effective. Cannabis warnings are still in their infancy, and this study suggests they need similar evolution. The finding that consumers want evidence-based, visually reinforced warnings mirrors what worked for tobacco.

Qualitative study cannot quantify warning effectiveness. Participants from legal states may have different attitudes than those in illegal states. Focus group dynamics can amplify dominant opinions. The study examined reactions to hypothetical warnings, not real-world behavioral responses.