Nearly Half of Patients on Opioid Treatment Use Cannabis — Mostly to Manage Symptoms

47.5% of patients on medication for opioid use disorder use cannabis, with most frequent users doing so to manage stress, anxiety, pain, and insomnia rather than purely for recreation.

Leyde, Sarah E et al.·Substance use & addiction journal·2026·Moderate EvidenceCross-Sectional
RTHC-08423Cross SectionalModerate Evidence2026RETHINKTHC RESEARCH DATABASErethinkthc.com/research

Quick Facts

Study Type
Cross-Sectional
Evidence
Moderate Evidence
Sample
N=27

What This Study Found

47.5% of MOUD patients used cannabis, 27% frequently (≥3 days/week). Frequent use was associated with anxiety, nausea, and lower employment. Among those surveyed in depth, 56% used for both recreation and symptom management, 30% for symptom management only. Top medical reasons: stress (100%), anxiety (83%), insomnia (79%), pain (75%), depression (75%), PTSD (67%). No significant differences in MOUD outcomes.

Key Numbers

303 participants, 47.5% used cannabis, 27% frequently. Subsample of 27 frequent users: 100% used for stress, 83% anxiety, 79% insomnia, 75% pain, 75% depression, 67% PTSD. 52% wanted to cut down. Employment associated with less frequent use (OR 0.54).

How They Did This

Analysis of 303 participants from a randomized trial of a mind-body intervention adjunct to MOUD. Frequent cannabis users (≥3 days/week) were compared with less frequent/non-users on demographics and clinical characteristics. A subsample (n=27) completed detailed telephone surveys on cannabis use patterns and motivations.

Why This Research Matters

Many opioid treatment programs discourage or penalize cannabis use, but most patients using it are self-medicating real symptoms. Understanding these motivations could shift policy toward addressing underlying conditions rather than policing cannabis use.

The Bigger Picture

The finding that cannabis use doesn't worsen MOUD outcomes but patients are using it for untreated symptoms suggests a systemic failure — patients aren't getting adequate treatment for stress, anxiety, pain, and trauma, so they self-medicate with cannabis.

What This Study Doesn't Tell Us

Cross-sectional design from a clinical trial population may not represent all MOUD patients. Small subsample (n=27) for detailed motivations. Self-reported cannabis use subject to bias. Cannot determine whether cannabis actually helps the reported symptoms.

Questions This Raises

  • ?Would treating the underlying conditions (anxiety, pain, PTSD) reduce cannabis self-medication?
  • ?Should MOUD programs integrate medical cannabis screening?
  • ?Could cannabis be formally incorporated as adjunctive therapy in some cases?

Trust & Context

Key Stat:
Evidence Grade:
Moderate-sized clinical trial sample with detailed subsample interviews, limited by cross-sectional design and self-reported data.
Study Age:
Published 2026, reflecting current MOUD treatment landscape.
Original Title:
Cannabis Use Among Individuals Treated with Medication for Opioid Use Disorder: Correlates, Patterns, and Motivations for Use.
Published In:
Substance use & addiction journal, 29767342251401312 (2026)
Database ID:
RTHC-08423

Evidence Hierarchy

Meta-Analysis / Systematic Review
Randomized Controlled Trial
Cohort / Case-Control
Cross-Sectional / ObservationalSnapshot without intervening
This study
Case Report / Animal Study

A snapshot of a population at one point in time.

What do these levels mean? →

Frequently Asked Questions

Do people in opioid treatment use cannabis?

Nearly half (47.5%) do, with about a quarter using it three or more times per week. Most aren't using purely for recreation — they're self-managing real symptoms like stress, anxiety, pain, and insomnia.

Does cannabis interfere with opioid treatment?

In this study, frequent cannabis use was not associated with significant differences in key MOUD outcomes including substance use and treatment retention, though it was associated with more anxiety and nausea.

Read More on RethinkTHC

Cite This Study

RTHC-08423·https://rethinkthc.com/research/RTHC-08423

APA

Leyde, Sarah E; Merrill, Joseph O; Treadway, Anna J; Pike, Kenneth C; Price, Cynthia J. (2026). Cannabis Use Among Individuals Treated with Medication for Opioid Use Disorder: Correlates, Patterns, and Motivations for Use.. Substance use & addiction journal, 29767342251401312. https://doi.org/10.1177/29767342251401312

MLA

Leyde, Sarah E, et al. "Cannabis Use Among Individuals Treated with Medication for Opioid Use Disorder: Correlates, Patterns, and Motivations for Use.." Substance use & addiction journal, 2026. https://doi.org/10.1177/29767342251401312

RethinkTHC

RethinkTHC Research Database. "Cannabis Use Among Individuals Treated with Medication for O..." RTHC-08423. Retrieved from https://rethinkthc.com/research/leyde-2026-cannabis-use-among-individuals

Access the Original Study

Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.

This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.