June 6, 2025
“I Think One Enhances the Other”: Use of Harm Reduction & Drug Treatment Among Participants of Syringe Services Programs
Alison Newman, MPH; Teresa Winstead PhD, MA; Leif Layman, MPH Full report | Participant summary | Webinar recording Key Findings Background People who use drugs access different types of services to manage their health and substance use. These can include medical and mental health care, substance use disorder (SUD) treatment, and harm reduction services, most…
March 20, 2025
Improve Lives, Prevent Deaths
How to Develop a Comprehensive Approach to Prevent Overdose Deaths and Improve the Health of People Who Use Opioids Overdose deaths and opioid use disorder continue to affect people in Washington State. Communities have made significant efforts to address this issue, though building a comprehensive and successful approach can be challenging. Fortunately, there is strong…
March 4, 2025
Methamphetamine in Washington Symposium 2019
The University of Washington Alcohol & Drug Abuse Institute, with support from the Washington HCA Division of Behavioral Health & Recovery, hosted a symposium on Methamphetamine in Washington: Informing Policy and Research, in June 2019, with over 130 participants. A diverse group of speakers presented current information on the scope and impact of meth use, with…
January 22, 2025
Focus on Meth Educational Series
Focus on Meth 2025 examined methamphetamine use in Washington State through the lenses of harm reduction, clinical care, and real-world research. This project was coordinated by the ADAI Center for Community-Engaged Drug Education, Epidemiology, and Research (CEDEER). 2025 Webinars and Symposium January 23, 11am-12pm PT: Latest Overdose Trends and Reasons for ED Visits, Dr. Lauren…
January 2, 2025
High Potency Timeline
December 30, 2024
Cannabis Publications
The following cannabis-related publications are authored or co-authored by members of the CERP team. Journal articles | Reports & Factsheets/Briefs Journal articles 2026 Exploring THC labelling preferences to communicate the strength of cannabis products: Insights from U.S. consumers. Dawson D, Hall W, Goodwin I, et al. International Journal of Drug Policy 2026;147:105076. [doi: 10.1016/j.drugpo.2025.105076] People…
December 19, 2024
A Matter of Equity People Living with Psychosis are Disproportionately Affected by Cannabis Adverse Events
This project analyzes data from the International Cannabis Policy Study, collected between 2020 and 2023. Its aims are to compare the prevalence of cannabis-related adverse effects among people who used cannabis in the last 12 months, according to their mental health diagnostic (no mental health diagnosis, psychotic disorder diagnosis, or any other mental health diagnosis…
December 3, 2024
What’s New in Harm Reduction Research (December 2024)
A review of recently published research on harm reduction topics – December 2024. Need help getting copies of any of these articles? Email Meg Brunner, MLIS (meganw@uw.edu). Free articles have “(open access)” after the titles; all other articles require a subscription to access. Facilitators and barriers to monitoring and evaluation at syringe service programs. (open access)…
November 14, 2024
Cannabis Projects
Current projects (as of January 2026) Clinical Resources for Cannabis Health Adverse Outcomes: Enhancing Health Care Providers’ Ability to Intervene on Cannabis Hyperemesis Syndrome and Cannabis Induced Psychosis October 2025 – June 2027 Status: Needs and resources’ assessment Patients presenting with cannabis-related adverse events (AEs) and other problems are growing more prevalent in health care settings across the U.S. and Canada, increasing the burden…
October 28, 2024
Leif Layman
Leif Layman (He/Him) is a research consultant with the UW Center for Community-Engaged Drug Education, Epidemiology, and Research (CEDEER) at ADAI and leads data management for the WA State Community Drug Checking Network (CDCN). His professional focus has been to better understand the health issues that contribute to disproportionate morbidity and mortality among marginalized communities…
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