What It Is
Veterans have become an important focus in psychedelic-assisted therapy research because many experience high rates of:
Post-traumatic stress disorder (PTSD)
Depression
Anxiety
Substance use challenges
Chronic stress
Suicidal thoughts
Emotional numbness or disconnection
Researchers have been exploring whether psychedelic-assisted therapies may help address some of these conditions, particularly when traditional treatments have not provided sufficient relief.
Much of this research has focused on substances such as psilocybin and MDMA in structured therapeutic settings.
How It Works
Trauma and chronic stress can affect the brain and nervous system in complex ways. Research suggests PTSD and severe depression may involve:
Heightened fear responses
Hypervigilance
Rigid or repetitive thought patterns
Emotional avoidance or numbness
Difficulty processing traumatic memories
Altered stress regulation
Changes in brain network activity
Researchers believe psychedelics may temporarily increase psychological flexibility and emotional openness in some individuals.
Some studies suggest psychedelic experiences may also affect the brain’s “default mode network,” a system involved in self-focused thinking, rumination, identity, and habitual mental patterns.
Researchers are studying whether these temporary changes may help some individuals process emotions, revisit memories differently, or feel more connected to themselves and others in therapeutic environments.
What It Feels Like
Veterans participating in psychedelic-assisted therapy research have reported a range of experiences, including:
Emotional release
Reduced emotional numbness
Increased self-reflection
Greater feelings of connection
Revisiting traumatic memories in new ways
A sense of relief or perspective shift
Others may experience:
Fear
Intense emotional discomfort
Confusion
Physical sensations such as nausea or increased heart rate
Challenging psychological experiences
Experiences can vary significantly depending on the person, the setting, preparation, mental health history, and level of therapeutic support.
What It Is Used For
Research involving veterans has explored psychedelic-assisted therapy for:
PTSD
Depression
Anxiety
Alcohol use disorder
Moral injury
End-of-life distress
Social disconnection
Some researchers are also studying how psychedelics may affect emotional processing, cognitive flexibility, and social connectedness more broadly.
While veteran-focused research receives significant public attention, researchers are also studying psychedelic-assisted therapy in non-veteran populations experiencing depression, trauma, anxiety, and other mental health challenges.
Are These Brain Patterns Unique to Veterans?
Combat trauma is a unique experience, and not all trauma or depression is the same.
However, researchers have found that some of the nervous system and brain patterns studied in PTSD may also appear in individuals experiencing chronic depression, severe stress, or other forms of trauma exposure. These may include:
Persistent fear or stress activation
Emotional shutdown
Rumination
Difficulty feeling connected or hopeful
Rigid negative thought patterns
Because of this overlap, some researchers believe findings from veteran-focused psychedelic studies may eventually help inform broader mental health treatment approaches as well.
Research Findings
A major 2021 study published in Nature Medicine found that MDMA-assisted therapy significantly reduced PTSD symptoms in many participants with severe PTSD compared to placebo-assisted therapy.
Research on psilocybin-assisted therapy for major depressive disorder has also shown promising results in reducing depressive symptoms in some participants under controlled clinical conditions.
Additional neurobiology research has shown that PTSD may involve changes in fear processing, stress regulation, emotional memory, and brain network functioning.
Researchers continue to study how psychedelics may temporarily alter rigid patterns of thought and increase psychological flexibility, though many questions remain unanswered.
Risks and Side Effects
Psychedelic-assisted therapy is not considered risk-free.
Potential risks may include:
Anxiety or panic
Emotional overwhelm
Temporary increases in heart rate or blood pressure
Re-emergence of traumatic memories
Confusion or impaired judgment during altered states
Some individuals may also experience worsening psychological symptoms, particularly without proper screening, support, or safe environments.
Researchers continue to emphasize the importance of:
Medical and psychological screening
Trained therapeutic support
Careful preparation
Integration after experiences
Ongoing clinical research
Bottom Line
Veterans are often included in psychedelic therapy research because PTSD, depression, trauma exposure, and emotional distress remain major public health concerns within veteran communities.
Researchers are studying whether psychedelic-assisted therapies may help address some of the underlying patterns involved in trauma and chronic stress, including emotional disconnection, fear responses, and rigid thought patterns.
While findings so far have shown promise in some controlled studies, psychedelic-assisted therapy research is still developing, and more research is needed to better understand long-term safety, effectiveness, and who may benefit most.