Military sexual trauma (MST) affects an estimated 1.4 million U.S. veterans and is one of the most consequential noncombat-related health burdens associated with military service. Military trauma is still commonly viewed through the lens of combat exposure, but MST is a distinct form of military trauma involving interpersonal violation, power imbalance, disrupted trust, and long-term mental and physical health consequences.
For clinicians, MST should not be understood simply as another cause of posttraumatic stress disorder. PTSD is one of its most common consequences, but MST is also associated with depression, suicidal behavior, substance use disorders, chronic pain, reproductive and sexual health concerns, homelessness, and greater health care use. The injury may extend beyond the traumatic event to the loss of safety and trust within an institution where service members depend on others for protection.
The Department of Veterans Affairs defines MST as sexual assault or threatening sexual harassment experienced during military service. MST is not a psychiatric diagnosis. It describes an exposure that can contribute to a range of health conditions.
What the national data show
National data show a marked sex disparity: prior nationally representative estimates found MST histories among 44.2 percent of women veterans and 3.5 percent of men veterans. The lower percentage among men should not obscure the substantial number of male survivors, given the demographic composition of the veteran population.
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Many incidents are never formally reported during military service. Reporting data indicate that fewer than one in five sexual assaults are formally reported. Fear of retaliation, career consequences, stigma, uncertainty about the institutional response, and concern about not being believed all inhibit disclosure.
Clinical screening does not fully solve the problem. Black and Latina women who reported MST in research interviews were more likely than White women to have their MST history remain uncaptured by a positive VA clinical screen. Universal screening can therefore still produce unequal recognition and access. Rescreening and explicitly clarifying that MST includes sexual harassment may reduce these disparities.
A 2026 national analysis also clarified the context in which MST occurs. Nearly two-thirds of affected veterans reported multiple occurrences, and most identified a higher-ranking service member as the perpetrator of at least one experience. MST therefore often reflects repeated exposure within relationships shaped by authority, dependency, and restricted freedom to avoid the perpetrator, not an isolated event.
The clinical consequences extend well beyond PTSD
This context helps explain its clinical consequences. MST is among the strongest predictors of PTSD in veteran populations and may be more strongly associated with PTSD than combat exposure. MST-related PTSD may also involve greater shame, self-blame, chronic anger, relationship difficulties, and disruption of attachment and trust.
The effects extend beyond PTSD. MST is associated with depression, suicidal behavior, substance use, disordered eating, and homelessness. Veterans who experienced both sexual harassment and assault report worse PTSD, depression, and suicidality than those who experienced only one form, supporting assessment of the full range of MST rather than focusing only on assault.
The physical burden is also increasingly recognized. Survivors have higher rates of chronic pain, reproductive and sexual health problems, and health care utilization. These associations likely reflect interacting effects of chronic stress, behavioral health consequences, barriers to care, and cumulative health burden. MST should therefore be considered a long-term health determinant, not solely a psychiatric history.
Institutional betrayal is part of the injury
A defining feature of MST is institutional betrayal: the additional harm that occurs when an organization fails to prevent abuse, protect those who report it, respond appropriately, or hold perpetrators accountable. Military service depends on hierarchy, cohesion, and trust. When those structures enable harm or fail survivors afterward, the institutional response becomes part of the trauma.
Institutional betrayal is clinically relevant, not merely a policy concept. Among veterans exposed to MST, perceptions of betrayal have been associated with PTSD and depressive symptoms and increased odds of attempting suicide after MST. Outcomes are shaped not only by the original event but also by what institutions do next.
What this means at the bedside
That principle applies directly to health care. The clinical challenge is not simply identifying whether MST occurred; it is understanding how MST may alter the patient-clinician relationship. Prior interpersonal and institutional harm may affect disclosure, treatment engagement, perceptions of authority, and willingness to undergo examinations or procedures.
Trauma-informed care should therefore be understood as a systems-based clinical approach, not a communication slogan. Predictability, autonomy, shared decision-making, and reliable follow-through reduce barriers created by prior loss of control. Clinicians should interpret a negative screen cautiously, consider rescreening when clinically appropriate, and ensure that a positive screen leads to an accessible treatment pathway rather than another referral without follow-through.
The VA has built a national infrastructure for MST screening and care. It provides free treatment for related mental and physical health conditions without requiring that the event was reported during service or documented, and every VA medical facility has an MST coordinator. Yet screening does not consistently lead to treatment. Recent national data indicate that fewer than half of veterans with MST reported receiving MST-related care.
Evidence-based PTSD treatments, including cognitive processing therapy and prolonged exposure, remain first-line options. Tailored treatments are also moving beyond theory. In a 2026 randomized trial of 140 veterans, the MST-focused group treatment Warrior Renew and an active comparison intervention both reduced PTSD symptoms. Warrior Renew produced greater improvement in trauma-related beliefs, including self-blame, and had a dropout rate of approximately 11 percent.
MST appears across medicine, in primary care, emergency departments, pain clinics, behavioral health settings, and specialty practices. Effective care requires recognizing a form of military trauma shaped by interpersonal harm, hierarchy, and institutional response. It must connect identification with treatment while accounting for how prior betrayal affects disclosure and engagement.
Recovery requires more than reducing PTSD symptoms. It requires health care systems capable of restoring the conditions necessary for long-term health: safety, autonomy, and trust.
Timothy Lesaca is a psychiatrist in private practice at New Directions Mental Health in Pittsburgh, Pennsylvania, with more than forty years of experience treating children, adolescents, and adults across outpatient, inpatient, and community mental health settings. He has published in peer-reviewed and professional venues including the Patient Experience Journal, Psychiatric Times, the Allegheny County Medical Society Bulletin, and other clinical journals, with work addressing topics such as open-access scheduling, Landau-Kleffner syndrome, physician suicide, and the dynamics of contemporary medical practice. His recent writing examines issues of identity, ethical complexity, and patient–clinician relationships in modern health care. Additional information about his clinical practice and professional work is available on his website, timothylesacamd.com. His professional profile also appears on his ResearchGate profile, where further publications and details may be found.
