In collaboration with Manchester Metropolitan University, Curaleaf Clinic conducted a ground-breaking study revealing the alarming contamination levels in street cannabis, posing serious risks to those using it for medical purposes. Led by Dr. Oliver Sutcliffe and Dr. Simon Erridge, the research found that contaminants such as mould, lead, and synthetic chemicals make illicit cannabis a ‘toxic time bomb’ for users. By exposing these risks, the study sheds light on the critical need for safer, regulated alternatives for those seeking medical relief.
Challenge
Unregulated Dangers: The study uncovered that 90% of the street cannabis samples contained harmful contaminants, including mould, E. coli, and lead, presenting severe health risks like respiratory failure, infections, and neurological issues.
Synthetic Substances: Over a quarter (27%) of the samples contained synthetic cannabinoids such as Spice and K2, substances that can induce seizures, hallucinations, and even death, posing extreme dangers to users.
Health Risks for Medical Users: More than half (53%) of those purchasing illegal cannabis use it to manage conditions like anxiety and chronic pain, unknowingly risking exposure to harmful toxins in their search for symptom relief.
Enduring Demand for Illicit Cannabis: Despite these dangers, 75% of cannabis users continue to buy from illegal sources, prioritising cost and convenience over safety and health.
Key Statistics
- Contamination Prevalence: A striking 90% of illicit cannabis samples contained dangerous contaminants such as mould, lead, and bacteria, posing immediate health risks.
- Synthetic Cannabinoids: 27% of the samples tested positive for synthetic substances, significantly increasing health risks for users.
- Health-Seeking Users: 53% of those using illicit cannabis are attempting to manage medical conditions, unknowingly putting themselves at risk by consuming unregulated products.
Action
Educational Broadcast Campaign: Curaleaf’s broadcast campaign strategically shared these findings across a vast range of media platforms. Major networks, including the Bauer Hub and Greatest Hits Network, delivered critical information on the dangers of illicit cannabis to millions, aiming to inform and protect the public. This broad media approach underscored the safety advantages of regulated medical cannabis.
Promoting Safer Alternatives: Curaleaf stressed the safety and quality of medical-grade cannabis through radio interviews and social media engagement, educating listeners on the benefits of choosing legally sourced cannabis that meets rigorous safety standards.
Accessible Resources and Support: Curaleaf’s website served as a central resource for those looking to make safer choices. Visitors could use the eligibility checker to explore transitioning to regulated medical cannabis for safer symptom management, along with full access to the study findings.
Results
Powerful Media Reach: The campaign achieved impressive coverage with 265 media opportunities and a reach of over 83 million. Coverage across key networks like the Bauer Hub and Greatest Hits Network provided extensive visibility, engaging listeners nationwide. The robust platforming on these major networks allowed Curaleaf’s message to reach diverse demographics, raising significant awareness about the serious health risks tied to unregulated cannabis.
High-Impact Social Engagement: Extending beyond broadcast media, the campaign utilised social media to further amplify its reach. Posts on the Greatest Hits News TikTok account reached 46,500 followers, while targeted posts on Greatest Hits Radio Manchester’s X (formerly Twitter) account engaged an additional 7,416 users. This social media engagement brought the study’s findings to younger and digital-savvy audiences, encouraging widespread discussion and awareness around cannabis safety.
Increasing Demand for Regulated Cannabis: Through educating audiences on the differences between street and regulated cannabis, Curaleaf’s campaign not only raised safety awareness but also directed listeners to safer, clinically tested options. This messaging led to increased traffic on Curaleaf’s website, where users explored eligibility for medical-grade cannabis, showcasing a positive shift towards safe, regulated symptom management alternatives.
Key Takeaways
Addressing Health Risks: The campaign underscored the significant health risks associated with illicit cannabis, reinforcing Curaleaf’s mission to inform the public on safety and provide secure options within the cannabis space.
Effective Public Engagement: With a substantial media reach and strong social media engagement, Curaleaf successfully raised awareness of the study’s findings, prompting users to consider safer cannabis options through licensed clinics.
Commitment to Safe Access: As an industry leader, Curaleaf continues to advocate for safe, regulated cannabis access in the UK, offering medical-grade solutions for those seeking relief while prioritising health and safety.

