Ketamine Therapy Can Help Reset Your Nervous System. But That's Only the Beginning.
Making Room: Ketamine, Preparation, and the Integration Process
By Dr. Ashley Alden
I have been witness to many conversations around ketamine. With psychotherapists using it in treatment, with ketamine clinics and their clinical teams, with patients sharing their experiences, and sitting with the research behind it. The clinical data is real. The potential for misuse is real. And the question I keep coming back to, with every patient, is not just whether ketamine is effective, but whether this person has the intention, the support, and the integration framework to use that toward healing at the root.
What I find equally important, and what gets far less attention, is the preparation. Connecting with your body. Understanding your nervous system. Looking at the nutritional and lifestyle patterns that are fueling the fire and recognizing them as part of what can shift. These are not separate from the ketamine work. They are part of it. They are the things we go into together.
How I Think About This With My Patients
For the right patient, at the right time, with the right support around it, ketamine can help break patterns, give the body a breath so patients have more space to do the work in connecting with their nervous system in a more balanced approach.
It is a specific tool to lower the nervous system's defenses long enough for healing to begin. Is it the only tool that can do that? No. There are many ways to get here. But it can be a powerful starting point, and it works best when it is part of a broader approach that addresses why the nervous system became dysregulated in the first place, whether that is unresolved trauma, chronic stress, nutritional deficiencies, environmental factors, or some combination of all of them.
The preparation matters. The integration team matters. What you are moving toward, not just what you are moving away from, matters.
What We Do Before the Session
Before any of these experiences, I work with patients on looking at what is fueling the fire. The lifestyle patterns, the nutritional choices, the environment they are living in and how it is affecting their body.
The preparation work is really about helping patients begin to register with their own body and the life they have built around them. We bring in nutritional and lifestyle adjustments, somatic practices, and energetic work before the medicine is ever introduced.
Preparation, in any space, is about making room. Room for physical change. Room for energetic change. What becomes possible from there is its own unfolding.
The Integration Window Is Where the Real Work Lives
Ketamine therapy can give the body a breath. It makes space for you to go deeper, to do the work. What you do with that window, the therapy, the somatic work, the reflection, the behavioral changes, is what actually rewires the brain into new patterns.
A review published in PMC put it plainly: "The most effective use of psychotherapy occurs after the acute dissociative phase, in the days and weeks after ketamine administration, when newly available pathways can be stabilized into healthier circuits." (1)
Integration is not a debrief conversation the morning after a session. It is an ongoing process, and one we move through together, working closely alongside your psychotherapist and therapy team so that what surfaces has somewhere to go.
When you come out of the experience, we continue building the foundations that support everything else. What the body needs to produce healthy neurotransmitters. The nutritional and lifestyle practices that keep the nervous system from reverting to old patterns. Somatic movements and exercises specifically for maintaining that balance over time. These are not add-ons. They are how the window stays open and how the change becomes something that lasts.
What Ketamine Actually Does in the Brain
Ketamine is a dissociative anesthetic, not a classical psychedelic like psilocybin or MDMA. It works primarily by blocking NMDA receptors, glutamate receptors involved in how the brain processes stress, memory, and emotional reactivity. When these receptors are temporarily blocked, the amygdala, the brain's alarm system, quiets down. Chronic stress-driven inflammation begins to ease. Within hours, the brain begins growing new dendritic spines in the prefrontal cortex, the region responsible for emotional regulation and learning. One study found this process begins reversing stress-induced damage within 12 hours of a single infusion. (5)
For someone stuck in a chronic sympathetic state, where the nervous system won't settle long enough to process anything, that speed matters. It gives your brain a chance to register what it actually feels like to be in a more calm state. And from there, the real work can begin.
Where I Stand on This
Ketamine should not be used to substitute for something else. Anything can be abused. What determines whether a substance becomes a tool or a trap is the intention you bring to it and the structure you have around it.
Those who work primarily with plant medicine tend to be skeptical of ketamine, viewing it as too clinical, too dissociative, too easy to reach for without the ceremonial or relational container that other medicines typically require. And I understand that concern. On the other side, practitioners working within Western medicine are increasingly seeing real clinical results, particularly for people dealing with suicidal ideation, treatment-resistant depression, and chronic nervous system dysregulation and pain. That evidence is hard to dismiss.
My own view sits somewhere that holds both of those things. The clinical data is real. The risks of misuse are also real. And the question that I keep coming back to, with every patient, is not just whether ketamine is effective, but whether this person has the intention, the support, and the integration framework to actually use that effectiveness to move toward healing at the root.
Dr. Ashley Alden is a functional and integrative medicine physician practicing in Los Angeles and the Bay Area, CA and via telemedicine. She specializes in root cause approaches to chronic conditions, nervous system regulation, and psychedelic integration.
References
An integrative approach to ketamine therapy may enhance multiple dimensions of efficacy. PMC.https://pmc.ncbi.nlm.nih.gov/articles/PMC8653702/
Clinical trials since 2020 of rapid anti-suicidal ideation effects of ketamine: a systematic review. Translational Psychiatry (2025). https://www.nature.com/articles/s41398-025-03255-0
Meta-analysis of the effects of ketamine on suicidal ideation in depression patients. Translational Psychiatry(2024). https://www.nature.com/articles/s41398-024-02973-1
Ketamine for a boost of neural plasticity: how, but also when? PMC.https://pmc.ncbi.nlm.nih.gov/articles/PMC8190578/
Long-term structural and functional neural changes following a single infusion of ketamine in PTSD. Neuropsychopharmacology (2023). https://www.nature.com/articles/s41386-023-01606-3
