What does research show about cannabis use among veterans with PTSD?
Research-Based Answer
Veterans represent one of the highest-use medical cannabis populations, with PTSD as the primary indication. Survey data: 20–35% of veterans with PTSD report current cannabis use; rates are higher in states with medical cannabis programs. Clinical evidence: observational studies consistently show veteran-reported improvements in PTSD symptoms, sleep, and quality of life. The VA's 2017 systematic review found insufficient evidence to recommend cannabis for PTSD but noted the biological plausibility. A 2021 RCT (Bonn-Miller et al.) — the largest cannabis PTSD trial to date (n=150) — found all three cannabis types tested (high THC, high CBD, balanced) reduced PTSD symptom severity vs. placebo, with the high-THC arm showing greatest effect on nightmares. However, the VA and DoD do not recommend cannabis for PTSD due to concerns about: addiction risk (veterans have elevated substance use disorder rates), cognitive effects interfering with trauma therapy, and federal employment implications for active duty. The VA cannot prescribe cannabis but clinicians can discuss it.
This answer summarizes peer-reviewed research and is intended for educational purposes only. It does not constitute medical advice. Consult a qualified healthcare provider before making any medical decisions.