Grounded in science. Focused on public safety.
Dr. Rossheim provides expert analysis, testimony, litigation support, and professional presentations on cannabis, hemp-derived THC, alcohol, kratom, nitrous oxide, amanita muscaria, and related products.
He has authored more than 100 peer-reviewed publications examining how these products are marketed, regulated, and made available, and the resulting implications for public health and safety.
Examples of intoxicating consumer products in U.S. retail markets.
Services
Services are tailored to support litigation, consulting, policy analysis, and professional education on intoxicating consumer products.
Retail display illustrating alcohol product availability, marketing, and pricing.
Expert consulting for attorneys and legal teams involving alcohol, cannabis, hemp-derived intoxicants, kratom, nitrous oxide, and related products. Services include case review, expert reports, depositions, and testimony.
Analysis of federal and state laws, regulations, and enforcement gaps affecting intoxicating consumer products. This includes evaluating how product characteristics, marketing practices, and retail availability influence public health and legal risk.
Evidence-based consulting for organizations, agencies, and professionals on intoxicating products and public health risks. Services include retail and marketing surveillance, study design, statistical analysis, report development, and interpretation of laws and regulations.
Presentations, webinars, and trainings for legal, public health, and policy audiences on the retail availability, marketing, regulation, and health risks of intoxicating consumer products.
About
Matthew Rossheim, PhD, MPH, CPH, FAAHB is an Associate Professor and a public health researcher specializing in the marketing, regulation, and public health impacts of alcohol, cannabis, and other intoxicating consumer products.
He has authored more than 100 peer-reviewed publications on substance use prevention and control. His work has informed laws and regulations at local, state, and federal levels and has been cited by the U.S. Food and Drug Administration and the World Health Organization.
Dr. Rossheim is widely regarded as a leading public health expert on hemp-derived intoxicating cannabis products. His research has been covered by major media outlets including BBC, CNN, CBS, NBC, NPR, The Washington Post, and The New York Times.
He works at the intersection of science, policy, and practice, helping clients understand not only what the evidence shows, but why it matters for public health, legal strategy, and regulatory decision-making.
Approach
Retail display illustrating the variety and marketing of intoxicating cannabis products.
Dr. Rossheim works with attorneys, law firms, public health organizations, and professional audiences seeking credible, evidence-based analysis.
Dr. Rossheim's approach is rigorous, clear, and evidence-driven. He provides analyses that are scientifically grounded, practically useful, and understandable to legal, public health, policy, and other professional audiences.
Contact
To inquire about consulting, expert witness services, or speaking engagements, please use the contact form below or contact me at matthew@rossheimllc.com.
Fees available upon inquiry. Consulting, speaking, and expert witness engagements are scoped based on project needs, preparation time, and travel requirements.