Do Medical Marijuana Laws Reduce Addictions and Deaths Related to Pain Killers?

37 Pages Posted: 13 Jul 2015 Last revised: 12 May 2023

See all articles by David Powell

David Powell

RAND Corporation

Rosalie Liccardo Pacula

University of Southern California - Schaeffer Center for Health Policy and Economics; National Bureau of Economic Research (NBER)

Mireille Jacobson

RAND Corporation

Date Written: July 2015

Abstract

Many medical marijuana patients report using marijuana to alleviate chronic pain from musculoskeletal problems and other sources. If marijuana is used as a substitute for powerful and addictive pain relievers in medical marijuana states, a potential overlooked positive impact of medical marijuana laws may be a reduction in harms associated with opioid pain relievers, a far more addictive and potentially deadly substance. To assess this issue, we study the impact of medical marijuana laws on problematic opioid use. We use two measures of problematic use: treatment admissions for opioid pain reliever addiction from the Treatment Episode Data Set (TEDS) and state-level opioid overdose deaths in the National Vital Statistics System (NVSS). Using both standard differences-in-differences models as well as synthetic control models, we find that states permitting medical marijuana dispensaries experience a relative decrease in both opioid addictions and opioid overdose deaths compared to states that do not. We find no impact of medical marijuana laws more broadly; the mitigating effect of medical marijuana laws is specific to states that permit dispensaries. We evaluate potential mechanisms. Our findings suggest that providing broader access to medical marijuana may have the potential benefit of reducing abuse of highly addictive painkillers.

Suggested Citation

Powell, David and Pacula, Rosalie Liccardo and Jacobson, Mireille, Do Medical Marijuana Laws Reduce Addictions and Deaths Related to Pain Killers? (July 2015). NBER Working Paper No. w21345, Available at SSRN: https://ssrn.com/abstract=2629950

David Powell (Contact Author)

RAND Corporation ( email )

1776 Main Street
P.O. Box 2138
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Rosalie Liccardo Pacula

University of Southern California - Schaeffer Center for Health Policy and Economics ( email )

635 Downey Way
Los Angeles, CA 90089-3333
United States

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

Mireille Jacobson

RAND Corporation ( email )

1776 Main Street
P.O. Box 2138
Santa Monica, CA 90407-2138
United States

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