Cannabis & Military Sexual Trauma (MST)
Research on cannabis and military sexual trauma is extremely sparse. Cross-sectional data show that MST survivors are more likely to use cannabis than veterans without MST exposure, but no clinical trials have evaluated cannabis as an MST-specific treatment. The self-medication pattern is documented; the therapeutic efficacy is not.
The Honest Summary
MST survivors are more likely to use cannabis (cross-sectional association, Lehavot et al. 2019). No clinical trials have tested cannabis for MST-specific symptoms. VA provides free, confidential MST-related care to all veterans regardless of combat status, discharge characterization, or service era — and does not require cannabis abstinence before treatment.
The Self-Medication Pattern
In a study of 468 women veterans, greater cumulative sexual trauma exposure was significantly associated with cannabis use. This is cross-sectional data and cannot establish whether cannabis is helping or harming, but it confirms what survivors and their advocates have long described: many MST survivors use cannabis to cope with trauma symptoms.
The pattern likely reflects a combination of:
- Unaddressed PTSD, anxiety, and depression symptoms from trauma
- Sleep disturbance and nightmares
- Hyperarousal and startle response
- Dissociation and emotional numbing
- Difficulty trusting traditional healthcare systems after military betrayal
- Barriers to traditional PTSD treatment (fear of disclosure, stigma, waitlist times)
No Clinical Trial Evidence
As of April 2026, no randomized controlled trials have evaluated cannabis as a treatment for MST-specific symptoms. The general cannabis-and-PTSD evidence base (see Cannabis & PTSD) applies to MST survivors by extension, and it is not encouraging — the only completed RCT in veterans found no advantage over placebo. MST-specific factors — including higher rates of sexual trauma-related dissociation, complex PTSD presentations, and co-occurring depression — may further complicate how cannabis affects survivors.
VA MST Services — What's Available
VA provides free, confidential MST-related care to all veterans regardless of:
- Combat status or service era
- Discharge characterization (including other-than-honorable)
- Time since service
- Whether the assault was formally reported during service
- Length of service
Services include individual therapy, group therapy, and medication management. Every VA medical center has a designated MST Coordinator who can help survivors navigate services confidentially. Survivors can request a provider of a specific gender, and can request that their care occur outside the main medical center (at a Vet Center, community-based outpatient clinic, or through telehealth) if that makes disclosure safer.
Vet Centers — An Alternative Path
Vet Centers provide community-based readjustment counseling that is separate from VA medical centers and has different confidentiality protections than VHA care. Vet Centers are often more accessible for MST survivors who are uncomfortable going to a main VA facility. MST survivors are eligible for Vet Center services regardless of their VHA eligibility status. More on Vet Centers.
Evidence-Based Treatments for MST-Related PTSD
The same trauma-focused psychotherapies that work for combat PTSD have strong evidence for MST-related PTSD:
- Cognitive Processing Therapy (CPT) — originally developed for sexual assault survivors, strong evidence base
- Prolonged Exposure (PE) — strong evidence for interpersonal trauma PTSD
- EMDR — evidence-based, available through VA
- Seeking Safety — designed specifically for co-occurring PTSD and substance use, often appropriate for MST survivors with CUD
VA does not require cannabis abstinence before providing these treatments.
Confidentiality and Disability Ratings
Disclosure of cannabis use to a VA MST specialist is protected under 38 U.S.C. § 7332 — the same strict confidentiality that applies to all VA substance use treatment records. MST-related VA disability compensation is based on the trauma and its effects, not on the survivor's coping strategies, and cannabis use does not reduce or invalidate an MST-related disability rating. Records confidentiality.
What This Means for MST Survivors
- You deserve care that does not require you to quit cannabis before you get help. VA does not require this.
- Cannabis may help short-term but has not been shown to treat MST symptoms long-term. Trauma-focused psychotherapy is the evidence-based pathway.
- Vet Centers may feel more accessible than main VA facilities. They are a legitimate treatment path, not second-tier care.
- Your gender, service era, and discharge status do not limit your MST eligibility. VA MST services are open to all survivors.
- If you are in crisis, call 988, then press 1. The Veterans Crisis Line is trained for MST-related crisis specifically.