Julie K. Johnson, PhD, has spent roughly two decades studying cannabis policy and public health, including eight years as the inaugural Chief of Research at the Massachusetts Cannabis Control Commission. Her work has examined youth prevention, legalization, dispensary policy, impaired driving, product testing, regulatory data, and the ways public-health assumptions hold up when tested against large datasets.
One of the defining features of Johnson’s work is a willingness to revise a hypothesis when the evidence points elsewhere. Youth prevention has personal importance for her, yet her research did not find the increases in adolescent use that she initially expected from medical cannabis laws and dispensary provisions. Rather than forcing the data into a predetermined narrative, she has used those findings to argue for prevention strategies that are better targeted to measurable risks.
Her broader research has also examined how legalization rules can incorporate evidence-based safeguards, including retail-density considerations, and how testing and regulatory data can reveal market or oversight problems. Across those areas, Johnson treats cannabis safety as an empirical question rather than a slogan.
That approach is especially valuable in a field where policy debates often move faster than the science. Her work helps distinguish concerns supported by data from assumptions that need to be reconsidered, while identifying where stronger information is still required.
Julie K. Johnson’s research reflects the Discovery Award through methodological rigor, transparency about what the evidence does and does not show, and a sustained focus on using data to improve cannabis policy.
Learn more about Julie K. Johnson: Cannabis Control Commission research
Cast your vote for Julie K. Johnson for the 2026 Discovery Award.
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