Therapy

Why Ketamine Is Changing Psychiatry

By Scott Shannon, MD - Wholeness Center, Fort Collins, Colorado
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Elephant Gate 2026

Something about modern mental health care is clearly not working.

Depression continues to rise. Suicide has climbed dramatically over the past two decades, anxiety disorders are now commonplace, and our teens are suffering at unprecedented rates. At the same time, psychiatric medications have never been more widely prescribed. Millions of people take antidepressants every day, yet a large percentage still struggle with persistent suffering.

For clinicians working in the field, this creates a quiet but growing sense of unease. Many of us entered psychiatry with the hope of helping people heal, yet too often our role has been reduced to managing symptoms. The tools we inherited—daily medications designed to correct presumed “chemical imbalances”—can sometimes help, but they rarely produce the deeper transformations patients are searching for. 

Over the past decade, however, a new movement has begun to reshape how we think about mental health and healing. The psychedelic renaissance has reintroduced a radically different idea: that certain medicines can catalyze profound psychological change when used in the right context.

Within this emerging paradigm, ketamine has taken on a unique and unexpectedly important role.

A Medicine Hiding in Plain Sight

Ketamine is hardly a new discovery. For more than half a century it has been used safely as an anesthetic in operating rooms and emergency departments around the world. Physicians know it well. It is predictable, inexpensive, and remarkably safe when administered properly.

What has changed is our understanding of its effects on the mind.

At sub-anesthetic doses, ketamine can relieve severe depression with extraordinary speed. In many cases, patients who have struggled for years with treatment-resistant depression experience meaningful relief within hours or days.

For a field accustomed to waiting weeks for antidepressants to take effect—if they work at all—this alone was enough to capture attention.

But as clinicians began working with ketamine more deeply, something even more intriguing emerged. The medicine did not simply relieve symptoms. It seemed to open psychological space for change.

Patients frequently reported experiences that felt surprisingly psychedelic: shifts in perspective, encounters with powerful emotional material, or moments of existential insight. Many described the experience as stepping outside the rigid patterns of thought that had trapped them for years.

Ketamine was doing something different.

From Symptom Suppression to Psychological Flexibility

For decades, psychiatric medications have primarily functioned as stabilizers or suppressants. They dampen anxiety, lift mood slightly, or soften emotional extremes. While this can be helpful, it rarely reorganizes the deeper psychological structures underlying suffering.

Ketamine appears to operate through a different mechanism.

Research suggests that ketamine temporarily disrupts activity in the brain’s default mode network, a set of interconnected regions associated with self-referential thinking and rumination. At the same time, it dramatically increases neuroplasticity—the brain’s ability to form new neural connections.

In practical terms, this creates a window of flexibility.

During this window, the rigid narratives that often define depression—stories of hopelessness, shame, or personal failure—can loosen. From this altered vantage point, people may see their lives differently.

For some, this shift can feel nothing short of revelatory.

Importantly, this is not merely a pharmacological effect. The experience itself appears to matter. Insight, emotional release, and meaning making frequently accompany ketamine sessions, especially when the experience is integrated through psychotherapy.

In other words, ketamine does not suppress the psyche. It can help open it

The Bridge Medicine

Ketamine’s unique legal and clinical status has also made it an important bridge within the broader psychedelic renaissance.

Classic psychedelics such as psilocybin and MDMA are currently progressing through regulatory pathways in the United States. The clinical data supporting these treatments is compelling, and many believe they will eventually reshape psychiatric care. We do have psilocybin available in Colorado and Oregon in regulated state programs that stand very clearly outside of psychiatry.

But these medicines remain restricted in mainstream care for now.

Ketamine, by contrast, is already legal and widely available for off-label psychiatric use. This has allowed clinicians to begin exploring psychedelic-informed models of care years before other medicines reach approval. 

In this sense, ketamine occupies a fascinating position between two worlds.

On one side lies conventional psychiatry, with its emphasis on symptom management and daily pharmacology. On the other side lies the emerging psychedelic paradigm, where episodic experiences catalyze psychological and spiritual transformation.

Ketamine sits squarely between them.

It speaks the language of both worlds.

Ketamine and Psychotherapy

Perhaps the most significant development in recent years has been the rise of ketamine-assisted psychotherapy (KAP).

In this model, ketamine is not used simply as a pharmacological antidepressant. Instead, it functions as a catalyst for psychological exploration. Psychedelic therapies may represent the first time in modern psychiatry that medication and psychotherapy are intentionally designed to work together rather than separately. Rather than suppressing symptoms day after day, the medicine temporarily opens the mind, while psychotherapy helps shape the meaning of what is discovered there.

At lower doses, patients may remain conversational while experiencing softened psychological defenses. This state allows therapists to work directly with difficult emotional material that might otherwise remain inaccessible.

At higher doses, the experience becomes more inward and reflective. Patients may enter immersive altered states in which symbolic imagery, memories, and insights arise spontaneously.

Following the session, psychotherapy helps integrate these experiences into lasting psychological change.

Clinicians often observe that therapy conducted in the days following ketamine treatment can be unusually productive. The mind remains more flexible, more open to new interpretations of long-standing patterns.

In many cases, months of therapeutic progress can occur in a far shorter period of time.

A Gentle Introduction to Psychedelic Terrain

Another reason ketamine has become so important is that it provides clinicians with a relatively accessible entry point into psychedelic therapy.

Classic psychedelic medicines can produce deeply transformative experiences lasting six to eight hours. For practitioners unfamiliar with these states of consciousness, this intensity can feel intimidating.

Ketamine journeys are shorter—often less than an hour—and the depth of the experience can be carefully titrated through dosage and delivery methods. This flexibility allows therapists to gradually develop skill in supporting altered states of consciousness.

Different delivery methods and dosing strategies open different layers of experience. Even small adjustments can shift the psychological landscape of a session, offering clinicians a direct encounter with the complexity of consciousness itself.

For many professionals entering the psychedelic field, ketamine has become a training ground for learning how to work with and learn from the psyche in new ways.

Consciousness and the Ketamine Experience

Ketamine also offers something that goes beyond clinical symptom relief.

The dissociative nature of the experience can temporarily separate awareness from the usual stream of thought. For many individuals, this reveals something profound: that consciousness itself exists independently of the narratives we normally inhabit. 

Patients sometimes describe the experience as encountering a vast field of awareness beyond their everyday identity. For someone trapped in the constricted mental loops of depression or anxiety, this glimpse can be transformative. It demonstrates—experientially—that their suffering is not the entirety of their being.

This realization alone can rekindle hope.

In some cases, ketamine experiences even resemble the transformative qualities reported in near-death experiences: a shift toward greater openness, compassion, and appreciation for life.

While such experiences cannot be predicted or engineered, they point toward deeper dimensions of healing. For some people, it becomes the kind of encounter that quietly reshapes the course of a life 

Challenges and Responsibilities

Despite its promise, ketamine is not without risks.

Like many psychoactive substances, it carries the potential for misuse if taken frequently or without proper oversight. Excessive use can lead to dependence and physical complications. Recent trends toward loosely regulated telemedicine prescribing and home use have raised concerns within the field. Without careful clinical structure, ketamine could be reduced to another daily coping tool rather than the catalyst for transformation it can be.

The psychedelic model is fundamentally different.

Rather than frequent dosing, it emphasizes episodic, intentional experiences embedded within therapeutic and relational support. The goal is not escape but insight. 

Maintaining this distinction will be critical for the future of ketamine therapy.

The chemical effect of ketamine also comes with some challenges. The ketamine response is not as durable as a classic psychedelic, and it is less likely in my experience to trigger a transformative metaphysical encounter. It often requires more psychotherapeutic support, on-going integration or repeated treatment. 

A Glimpse of the Emerging Paradigm

When viewed within the larger context of the psychedelic renaissance, ketamine begins to look less like a niche treatment and more like a preview of what mental health care may become.

For much of the twentieth century, psychiatry approached the mind as a malfunctioning machine that needed chemical correction.

The emerging paradigm suggests something very different.

It suggests that the psyche possesses its own inherent capacity for healing and reorganization. Medicines like ketamine may help unlock this capacity by temporarily loosening the rigid patterns that maintain suffering. In this framework, the clinician becomes less of a technician and more of a guide. The therapeutic relationship becomes a container for exploration rather than a mechanism for control.

The Inner Healer 

The psychedelic renaissance is often described as the discovery of powerful new medicines. Yet what these therapies may ultimately reveal is something much older.

Human beings appear to carry within them an innate movement toward healing. Beneath the layers of fear, trauma, and rigid patterns of thought lies a psyche that is constantly attempting to reorganize itself toward greater coherence and wholeness.

For much of the past century, psychiatry has struggled to see this. Our treatments have often focused on managing symptoms rather than engaging the deeper intelligence of the mind.

Ketamine is beginning to change that conversation.

By briefly loosening the habitual structures of consciousness, ketamine allows many people to encounter something they had forgotten was there: a wider field of awareness, a renewed sense of possibility, and the quiet realization that healing may not need to be imposed from the outside.

It may already be present within.

In this way, ketamine does more than relieve depression or catalyze psychotherapy. It offers a glimpse of a different model of care—one in which medicines serve not as suppressants of the psyche, but as catalysts that help reveal its intrinsic capacity for transformation. If that vision continues to unfold, the future of mental health care may look very different from the past.

And ketamine may be remembered as the medicine that helped mainstream psychiatry rediscover the healing intelligence that has always lived within the human psyche.

Psychedelics Today Mug
Dr Scott Shannon

About the Author

Scott Shannon, MD - Wholeness Center, Fort Collins, Colorado

Scott Shannon, MD is a psychiatrist and pioneer in integrative mental health. Inspired early by the study of consciousness under Andrew Weil, he has spent decades bridging psychotherapy, cross-cultural psychiatry, and psychedelic medicine. He founded The Wholeness Center in 2010, which grew into one of the largest integrative mental health clinics in the United States.

Dr. Shannon has authored four books on holistic psychiatry, including the field’s first textbook in 2001. He has served as a site Principal Investigator and therapist in Phase III trials of MDMA-assisted psychotherapy for PTSD and has researched LSD and cannabidiol. A founding member of the Psychedelic Research and Training Institute and former founding CEO of the Board of Psychedelic Medicine and Therapies, he continues to lecture internationally on transformative approaches to mental health care.