Impact of medical and recreational marijuana laws on cannabis, opioids and psychiatric medications: national study of VA patients, 2000 – 2024

Project Type(s):

Principal Investigator(s):
Department Co-Investigator(s):

We will analyze Veterans Health Administration electronic medical record data to determine the effects of medical marijuana laws (MML) and recreational marijuana laws (RML) on cannabis (use and cannabis use disorder); opioids (prescriptions, fatal and non-fatal overdoses, opioid use disorders); and psychotropic medication prescriptions, providing important information on MML and RML effects in VA patients and in others with similar vulnerability factors to researchers, policy makers, health professionals and the public.

Project Period:
July 1, 2019 April 3, 2024

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Geographic Area(s):

Practice Type(s):
Veterans Health Administration

Patient Population(s):
Adults, Veterans

Targeted Condition(s):
Substance Use Disorders