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Marijuana

PHI provides national leadership and guidance on cannabis policy development, implementation and analysis, in order to ensure that implementation is just, reduces harms, and addresses youth and problem use. PHI's model legislation has been used at the local and state levels,  including recommendations such as equity licenses, automatic expungement of possession convictions, age and ID verification on delivery, a ban on health and therapeutic claims, and restrictions on products that appeal to youth. PHI researchers analyze the immediate and long-term impacts from changes in local, state, and federal marijuana policies, new use patterns and their implications post-legalization.

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New PHI Study on Breakthrough Infection Shows Steep Vaccine Efficacy Decline Over Six Months

A PHI study in the journal Science analyzed COVID infection by vaccination status among 780,225 Veterans. Researchers found that protection against any COVID-19 infection declined for all vaccine types, with overall vaccine protection declining from 87.9% in February to 48.1% by October 2021.

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