Examining the effects of cannabis legalization on substance use among teens and parents in Washington State.
Official title: Cannabis Legalization a Decade Later: A Longitudinal Study of Teens, Young Adults, and Parents in Washington State
Funded at University of Washington · NIH-11077830 · Data updated 2026-11-12
This study looks at how the legalization of recreational cannabis in Washington State has affected how teens, young adults, and their parents use cannabis, alcohol, and nicotine over the past ten years, helping us understand these changes better to support healthier choices for families.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Washington NIH-funded |
| Lab location | 1 site (Seattle, United States) |
| Project start | July 1, 2022 |
| Project end | April 30, 2027 |
| Funding year | 2025 |
| Award (this year) | $511,173 |
| NIH project number | 5R01DA056371-04 |
| Project ID | NIH-11077830 on NIH RePORTER |
Who could benefit from this research
✓Could help
Ideal candidates for participation include families with adolescents and young adults living in Washington State who have been affected by cannabis legalization.
✕Less likely to help
Patients who do not reside in Washington State or who are not part of families with adolescents or young adults may not benefit from this research.
What this research studies
This research investigates how the legalization of recreational cannabis in Washington State has influenced cannabis, alcohol, and nicotine use among teens, young adults, and their parents over a decade. It aims to track changes in substance use patterns and the psychosocial impacts of these changes. By analyzing data from families involved in a long-term study, the research seeks to provide insights that can inform public health policies and promote responsible substance use. The study is grounded in developmental theories and utilizes a longitudinal approach to capture trends over time.
Why it matters
Potential benefit: If successful, this research could provide valuable insights into the public health implications of cannabis legalization, potentially guiding future policies and educational efforts.
How similar studies have gone: Previous research on substance use trends following cannabis legalization has shown promising results, indicating that this approach is grounded in established methodologies.
Where this research is happening
-
University of Washington
Seattle, United States Active
Researchers
- Principal investigator: Bailey, Jennifer a — University of Washington
- Study coordinator: Bailey, Jennifer a
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About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.