When Trauma Lives in the Body: The Connection Between Trauma, Inflammation and Physical Health
Can the experiences we survive emotionally eventually affect us physically?
For many years, Western medicine largely treated the mind and body as separate things.
Stress belonged to psychology.
Inflammation belonged to medicine.
Trauma belonged to therapy.
Physical disease belonged to the body.
But the more we learn about the nervous system, immune system, hormones, stress response and brain, the harder it becomes to draw such clean lines between them.
Our emotional experiences happen inside a biological body. When we experience fear, our heart changes. Our breathing changes. Our muscles contract. Stress hormones are released. Digestion changes. Our immune system responds. Our brain begins scanning the environment differently.
And when the threat is over, ideally, those systems eventually return to baseline.
But what happens when the threat doesn't really end?
What happens when someone spends months...or years...living in fear, instability, abuse, neglect, emotional suppression, hypervigilance or chronic stress?
And what happens when those experiences occur during childhood, while the nervous system itself is still developing?
This is where the emerging conversation around trauma, chronic stress, inflammation and disease becomes incredibly important.
Trauma Is More Than a Memory
When people hear the word trauma, they often think about remembering something terrible that happened.
But trauma isn't only a story stored in our memory. Trauma can affect how the nervous system learns to respond to the world.
A person who has experienced prolonged trauma may intellectually understand: “I'm safe now.” But their body may continue behaving as though danger could appear at any moment.
A raised voice may cause their heart to race.
Conflict may immediately tighten their stomach.
A certain smell may suddenly make them nauseated.
Someone becoming distant may create overwhelming anxiety.
Rest may actually feel uncomfortable.
Silence may feel unsafe.
Their muscles may remain chronically tense without them even noticing.
They may struggle to sleep deeply.
Their mind may constantly scan for what could go wrong next.
This doesn't mean trauma is literally stored inside a particular muscle or organ. Unless you are referencing Traditional Chinese Medicine, or energy healing such as Integrated Energy Therapy.
When people say “the body keeps the trauma” or “trauma is stored in the body,” they are often describing something much more complex.
Traumatic experiences can create lasting adaptations within the brain, nervous system, endocrine system and immune system.
And those systems communicate with one another constantly.
Your Survival System Was Designed to Protect You
The human stress response is brilliant. When your brain perceives danger, your sympathetic nervous system can mobilize incredibly quickly.
Adrenaline increases.
Heart rate increases.
Blood pressure can rise.
Breathing becomes faster.
Blood flow is redirected toward muscles.
Digestion becomes less important.
Your attention narrows toward the potential threat.
Stress hormones such as cortisol help mobilize energy.
This is commonly known as fight or flight, although trauma responses can also include freeze, shutdown, appeasement and other survival behaviours.
For a short-term threat, this system is incredibly useful.
Imagine having to jump out of the way of an approaching vehicle. You don't want your body calmly contemplating the philosophical implications of the situation.
You want it to MOVE.
The problem isn't that we have a stress response. We need one.
The problem can arise when the nervous system has difficulty turning that response off.
When Survival Becomes a Way of Life
For someone growing up in an unpredictable or unsafe environment, hyper-vigilance may have once been extremely adaptive.
Listening for footsteps.
Watching someone's facial expression.
Recognizing the sound of a door closing differently.
Monitoring a parent's mood.
Trying to prevent conflict.
Becoming invisible.
Becoming exceptionally helpful.
People pleasing.
Suppressing anger.
Disconnecting from feelings.
These behaviours may later be described as anxiety, perfectionism, control issues, emotional dysregulation or difficulty establishing boundaries.
But originally? They may have been survival strategies.
The nervous system learned: Pay attention. Something could happen.
Years later, the original danger may be gone. But the body can remain highly responsive to perceived threat. And repeatedly activating our biological stress systems has consequences.
The Missing Piece: Inflammation
Inflammation isn't inherently bad. It is another brilliant survival mechanism.
When you cut yourself, develop an infection or experience tissue damage, your immune system creates an inflammatory response to protect and repair you.
The problem is chronic, low-grade inflammation.
Researchers have become increasingly interested in whether chronic stress and trauma can influence inflammatory processes. And there is meaningful evidence that they can.
One major analysis examining childhood trauma included studies measuring inflammatory markers such as:
C-reactive protein (CRP)
Interleukin-6 (IL-6)
Tumour necrosis factor-alpha (TNF-α)
Adults who had experienced childhood trauma showed significantly elevated levels of all three inflammatory markers compared with those without those experiences.
Research examining PTSD has found similar patterns. A systematic review and analysis found higher levels of several immune and inflammatory biomarkers, including: IL-6, TNF-α and CRP among people with PTSD compared with healthy controls.
Another analysis found elevations in several inflammatory cytokines among people with PTSD, although researchers also noted considerable variation between studies and important influences including medication and co-occurring depression.
This does not mean: Trauma = inflammation = disease.
Human biology is far more complicated than that.
What it tells us is that psychological trauma can have measurable physiological associations. The mind and body were never truly separate.
The HPA Axis: Where Stress Becomes Biological
One important part of this conversation is something called the:
Hypothalamic-Pituitary-Adrenal Axis, or HPA axis.
It is one of the body's primary stress-response systems. When your brain perceives threat, a cascade of signals eventually tells your adrenal glands to release cortisol.
Cortisol isn't the enemy. We need cortisol.
It helps regulate metabolism, blood sugar, immune activity, blood pressure and our sleep-wake cycle.
But chronic stress can alter how this system functions.
Research into PTSD and trauma has found changes involving glucocorticoid signalling, cardiovascular reactivity, immune signalling and other biological systems involved in the stress response. Researchers studying PTSD treatment are now examining these physiological markers alongside psychological symptoms.
In other words: Trauma isn't merely something we think about. The body participates in the experience.
The Wear and Tear of Survival: Allostatic Load
There is another useful scientific concept called allostatic load.
Think of it as the cumulative physiological cost of repeatedly adapting to stress. Your body can handle periods of stress remarkably well. But imagine revving an engine constantly.
Eventually, parts begin experiencing more wear.
In humans, chronic stress can interact with:
sleep
metabolism
cardiovascular function
hormones
immune regulation
digestion
pain perception
appetite
blood sugar
mental health
health behaviours
This gives us a much more sophisticated understanding of trauma. It isn't that one traumatic event magically creates one particular disease.
Rather, chronic stress can become one factor among many that shapes the biological environment in which health or disease develops.
This Is Where Dr. Gabor Maté Enters the Conversation
Dr. Gabor Maté has probably become one of the most recognizable voices discussing trauma and physical illness.
His work, particularly When the Body Says No, explores relationships among chronic stress, emotional suppression, trauma and disease. There is something profoundly important about this conversation.
For generations, people were often told their emotional lives had nothing to do with their physical health.
We now know that isn't accurate.
Stress physiology, immune function, neurological function and emotional experience are deeply interconnected.
However, even as an energy practitioner and holistic person myself, I also think we need to be careful.
We cannot responsibly say: “You developed cancer because you didn't process your trauma.”
Or: “Your autoimmune condition exists because you suppressed your anger.”
Or: “If you heal your trauma, your disease will disappear.”
Science simply does not support those conclusions. Disease is extraordinarily complex.
Genetics, aging, infections, environmental exposures, hormones, socioeconomic conditions, medications, nutrition, physical activity, sleep, smoking, alcohol use, metabolic health and countless other factors can contribute.
Trauma may be one part of that biological picture.
It isn't destiny. And it certainly isn't blame.
The Body Keeps the Score: Understanding Trauma Beyond the Mind
Another book that dramatically changed the public conversation around trauma is psychiatrist Dr. Bessel van der Kolk's The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma.
The title itself has become almost a phrase within trauma-informed communities:
The body keeps the score.
But what does that actually mean?
It does not necessarily mean that trauma is literally trapped inside a particular muscle, organ or piece of connective tissue.
Rather, van der Kolk's work explores how traumatic experiences can affect multiple systems involved in how we experience ourselves and the world, including: memory, emotional regulation, bodily sensations, the stress response and the autonomic nervous system.
Someone may intellectually understand that an experience happened twenty or thirty years ago while their body still reacts intensely to something that resembles the original threat.
A smell.
A tone of voice.
Someone standing too close.
A slammed door.
Conflict.
Being ignored.
Feeling trapped.
Someone withdrawing affection.
The body can react before the conscious mind has even figured out why.
The heart races.
The stomach tightens.
Breathing changes.
Muscles contract.
The person may suddenly feel an overwhelming urge to fight, escape, freeze or appease.
This is one reason trauma recovery cannot always happen exclusively through intellectual understanding.
A person may completely understand why they react the way they do and still experience the physical reaction. This is where body-oriented and nervous-system-aware approaches to trauma have become increasingly important.
It also helps explain why practices involving movement, grounding, breath, mindfulness and somatic awareness can feel meaningful for some trauma survivors.
The goal isn't necessarily to “remove trauma from the body.”
It is to help the person develop a different relationship with their bodily sensations and gradually experience greater safety, choice and capacity in the present.
Louise Hay and You Can Heal Your Life
Long before nervous-system regulation became part of everyday wellness language, Louise Hay was encouraging people to consider relationships among thoughts, emotions and physical health.
Her book You Can Heal Your Life became enormously influential within spiritual, metaphysical and New Age communities.
Hay proposed that particular emotional patterns and beliefs could correspond with particular physical illnesses or symptoms.
For many readers, this introduced a completely different way of relating to illness.
Instead of viewing the body simply as something that malfunctioned, Hay encouraged people to become curious about their emotional lives, beliefs, relationships and internal dialogue.
There can be value in that curiosity.
If my body is struggling, what else is happening in my life?
Am I chronically stressed?
Am I sleeping?
Do I feel safe?
Am I grieving?
Am I suppressing emotions?
Am I living in an environment that constantly activates me?
Am I taking care of everyone except myself?
Those can be valuable questions.
However, this is also where we need to distinguish spiritual philosophy from established medical science.
There is currently no strong scientific evidence showing that a particular emotion causes a particular disease in the specific way sometimes presented in mind-body illness charts.
We should therefore be very cautious about saying things such as:
“Anger causes this disease.”
“Resentment caused your illness.”
“You developed this condition because you couldn't forgive someone.”
Those statements can unintentionally become another form of blame.
Imagine telling someone already struggling with cancer, autoimmune disease, chronic pain or another serious condition that they created their illness because they didn't emotionally heal properly.
That isn't trauma-informed.
And it isn't scientifically justified.
I think there is a more compassionate way to take something useful from Hay's work without treating every metaphysical explanation as medical fact.
We can become curious rather than certain.
Instead of: “Which emotion caused this illness?”
we might ask: “What is happening within my whole life and body that deserves attention?”
That distinction is enormous.
From Louise Hay to Modern Trauma Research
I find the evolution of this conversation fascinating.
Louise Hay approached it largely through spirituality, beliefs and metaphysical philosophy.
Dr. Gabor Maté has explored relationships among childhood experiences, attachment, emotional suppression, chronic stress and physical health.
Dr. Bessel van der Kolk has helped bring awareness to how trauma can affect the brain, nervous system, memory and bodily experience.
And researchers within fields such as psychoneuroimmunology are studying measurable communication among psychological processes, the nervous system, hormones and immune function.
These approaches are not identical.
And they should not be presented as though they carry the same scientific evidence.
But collectively, they point toward a question humans have been asking for a very long time: How much does what we experience emotionally affect what happens physically?
Science is beginning to give us increasingly sophisticated answers.
Stress changes physiology.
The nervous system communicates with the immune system.
Hormones influence immune activity.
Sleep influences inflammation.
Mental health influences behaviour.
Relationships influence perceived safety and stress.
Traumatic experiences can influence how our brains and bodies respond to future threats.
Everything is interconnected. This doesn't mean that every illness has an emotional cause.
It means that separating a human being into completely independent categories of physical, psychological, emotional and social health doesn't accurately reflect how human biology actually works.
Healing Should Never Become Another Form of Blame
This distinction matters deeply to me as a trauma-informed practitioner.
The last thing someone living with chronic illness needs is another person telling them: “You made yourself sick.”
Trauma survivors already tend to carry enormous amounts of misplaced responsibility.
We don't need to add another layer.
Healing isn't: You failed to regulate your nervous system, therefore you became ill.
Instead, we can say: Your body adapted to circumstances it was trying to survive.
And now we can begin offering that body experiences that communicate something different:
Safety.
Choice.
Rest.
Connection.
Movement.
Expression.
Boundaries.
Pleasure.
Grief.
Compassion.
And regulation.
Continue with the existing sections on trauma processing, somatic exercise, meditation, emotions, boundaries, lifestyle, Reiki and energy healing, nervous-system regulation, journal prompts and medical disclaimer.
This Is Where Dr. Gabor Maté Enters the Conversation
Dr. Gabor Maté has probably become one of the most recognizable voices discussing trauma and physical illness.
His work particularly When the Body Says No. Explores relationships among chronic stress, emotional suppression, trauma and disease.
There is something profoundly important about this conversation.
For generations, people were often told their emotional lives had nothing to do with their physical health.
We now know that isn't accurate.
Stress physiology, immune function, neurological function and emotional experience are deeply interconnected.
However, I also think we need to be careful.
We cannot responsibly say: “You developed cancer because you didn't process your trauma.”
Or: “Your autoimmune condition exists because you suppressed your anger.”
Or: “If you heal your trauma, your disease will disappear.”
Science simply does not support those conclusions.
Disease is extraordinarily complex.
Genetics, aging, infections, environmental exposures, hormones, socioeconomic conditions, medications, nutrition, physical activity, sleep, smoking, alcohol use, metabolic health and countless other factors can contribute.
Trauma may be one part of that biological picture.
It isn't destiny. And it certainly isn't blame.
Can We Help the Body Learn Safety Again?
This is the hopeful part. The nervous system isn't static. Our brains and bodies continue adapting throughout life. We cannot erase what happened.
But we can begin changing our relationship with what happened—and how our nervous system responds today.
There isn't one magical trauma-healing technique. For many people, healing works best through multiple approaches.
1. Processing Trauma
Sometimes healing requires actually processing what happened.
That may happen through trauma-informed psychotherapy or other evidence-based approaches with appropriately trained professionals.
Trauma processing isn't simply repeatedly telling the story.
It can involve recognizing triggers, understanding survival responses, processing emotions, challenging beliefs created through trauma and gradually helping the brain differentiate between:
“Then” and “Now.”
Psychological interventions have even been studied for their effects on inflammatory biomarkers. A meta-analysis of randomized controlled trials found evidence that psychological interventions can influence immune-system measures, although this remains a developing area of research.
Healing the psychological experience and caring for the physical body don't need to be competing philosophies.
They can coexist.
2. Somatic Exercise and Movement
Sometimes talking isn't enough.
Someone can understand their trauma beautifully and still feel their shoulders rise toward their ears every time conflict begins.
This is where somatic approaches can be helpful. Somatic work brings awareness back into the body.
Rather than asking only: “What am I thinking?”
we begin asking: “What am I noticing?”
Where am I tense?
Where am I holding my breath?
What happens inside me when I say no?
What happens when someone becomes angry?
Can I feel my feet against the floor?
Can I notice tension without immediately trying to get rid of it?
Can I move my body in a way that feels safe?
Somatic exercises may incorporate grounding, gentle movement, stretching, shaking, breath awareness, orienting to the environment, body scanning or noticing physical sensations.
Exercise more broadly also has growing evidence as a complementary intervention for PTSD. Reviews of randomized trials suggest structured exercise and mind-body movement can improve PTSD symptoms and quality of life for some people.
The goal isn't necessarily to force trauma out of the body. I prefer thinking of it as giving the nervous system new experiences.
Experiences of agency.
Movement.
Choice.
And safety.
3. Meditation and Mindfulness
Meditation is often presented as simply relaxing. It can be much more than that.
Mindfulness teaches us to observe sensations, emotions and thoughts without immediately reacting to them.
Over time, this can help some people develop greater awareness of their internal states.
There is also research examining mindfulness-based interventions and inflammatory and stress biomarkers.
A systematic review and meta-analysis found small improvements in biomarkers associated with inflammation and stress, although the authors emphasized limitations in study quality and possible publication bias.
That nuance matters.
Meditation isn't an anti-inflammatory medication.
But practices that reduce perceived stress and support nervous-system regulation may potentially influence some of the physiological pathways associated with chronic stress.
There is also an important trauma-informed caveat: Meditation doesn't feel safe for everyone.
Closing your eyes and sitting quietly inside your body can actually increase distress for some trauma survivors.
Meditation can be adapted.
Keep your eyes open.
Walk.
Listen to music.
Hold something comforting.
Meditate for two minutes instead of twenty.
Focus outward before focusing inward.
Trauma-informed healing should always include choice.
4. Allowing Emotions Instead of Constantly Suppressing Them
Many trauma survivors learned very early that certain emotions weren't safe.
Don't cry.
Don't be angry.
Don't talk about what happened.
Don't upset anyone.
Don't make a scene.
Don't be difficult.
Keep the peace.
Smile.
Move on.
Forgive.
Pretend everything is fine.
Eventually, emotional suppression can become automatic.
Part of trauma recovery can involve relearning: I am allowed to feel this.
Anger can exist without violence.
Sadness can exist without collapse.
Fear can exist without controlling every decision.
Grief can move.
Joy can be safe.
Processing emotion doesn't mean drowning in it. It means developing enough internal and external safety to experience emotions without needing to immediately suppress, judge or escape them.
5. Boundaries Are Nervous-System Work
This piece doesn't get discussed enough. You cannot meditate your nervous system into safety while continually exposing yourself to people who repeatedly violate your boundaries.
Sometimes regulation isn't another breathing exercise. Sometimes regulation sounds like:
No.
I'm not available for that.
You cannot speak to me that way.
I'm leaving this conversation.
I won't continue participating in this relationship under these conditions.
For someone whose childhood survival depended upon keeping everyone else happy, boundaries can initially feel incredibly unsafe.
The racing heart doesn't necessarily mean the boundary is wrong.
Sometimes it means the nervous system is experiencing something unfamiliar.
Healing may involve slowly teaching ourselves that disappointing another person does not automatically mean we are in danger.
6. Sleep, Food, Movement and Ordinary Human Things Matter Too
Sometimes the wellness industry makes healing unnecessarily exotic. The nervous system also needs very ordinary things.
Sleep.
Food.
Water.
Sunlight.
Movement.
Nature.
Connection.
Laughter.
Rest.
Routine.
Safe relationships.
Medical care.
None of these alone “heals trauma.” But the physical body requires resources. Trauma-informed care shouldn't forget that we are biological organisms.
7. What About Reiki and Energy Healing?
This is where my own work intersects with the conversation differently.
I practice and teach energy healing, including Reiki.
I have witnessed people become deeply relaxed during energy sessions. I've watched breathing slow, muscles soften, tears finally come and people describe feeling safer and more connected to themselves.
Those experiences matter.
But I also believe practitioners need to be honest about what we know scientifically.
There have been clinical studies examining Reiki for outcomes including pain, anxiety and mental wellbeing, and some studies report positive results. However, systematic reviews have repeatedly pointed to limitations such as small samples, inconsistent methods and problems with study quality.
Therefore I would not tell someone: “Reiki lowers inflammation and prevents disease.”
We don't have evidence strong enough to make that claim.
Nor should energy healing replace medical care or evidence-based trauma treatment.
Instead, I view energy healing as complementary care. A way to calm the central nervous system, to allow the body to do what it's supposed to. Heal.
In traditional Japanese Reiki teachings, Reiki was first used as a physical healing modality, rather than the metaphysical core we see in the Western world.
For some people, receiving Reiki creates a quiet, intentional environment where they can slow down, reconnect with their body, experience nurturing touch or non-touch presence, become aware of emotions and deeply rest.
Whether someone interprets that experience spiritually, energetically or simply as a deeply restorative practice is personal.
The value does not require us to exaggerate the science.
Healing Is About Increasing Capacity, Not Achieving Permanent Calm
One misconception about nervous-system healing is that a “regulated” person is calm all the time.
That's impossible.
A healthy nervous system moves.
You become activated when something requires action.
You become angry when something crosses a boundary.
You become afraid when something feels dangerous.
You grieve when you lose someone.
You become excited.
You rest.
You mobilize.
And then, when appropriate, you recover.
Regulation isn't the absence of activation. It is increasing our capacity to move through different states without becoming permanently trapped inside them.
That is very different.
Your Body Was Listening the Whole Time
Perhaps one of the most profound things trauma research teaches us is something trauma survivors have often known intuitively:
What happened mattered.
Even when everyone told you to get over it.
Even when someone minimized it.
Even when your family refused to talk about it.
Even when you learned to smile through it.
Even when decades passed.
Your experiences shaped you. Not because your body betrayed you. But because your body was constantly trying to adapt.
That is what survival systems do.
And understanding this can change the question from: “What is wrong with me?”
to: “What happened to me, and what did my mind and body learn they needed to do to survive it?”
And eventually: “What does my body need now?”
The Goal Isn't to Erase the Past
We cannot travel backward and give our younger selves a different childhood. We cannot make someone unhurt us. We cannot change what was lost.
But healing can give us something extraordinarily important: A different experience in the present.
Every time you recognize a trigger before reacting automatically…
Every time you allow yourself to rest without earning it…
Every time you breathe through an uncomfortable emotion…
Every time you move your body because movement feels good rather than because you are punishing it…
Every time you establish a boundary…
Every time you allow grief to exist…
Every time you choose a safe relationship instead of recreating a familiar harmful one…
Every time you sit quietly with yourself and realize: I am here. I survived.
And this moment is different…you are creating a new experience.
Healing isn't about convincing ourselves that the past didn't matter. It is about helping the present become something different.
A Final Important Note
Trauma can affect physical health. Chronic stress can influence the nervous system. The nervous system communicates with the endocrine and immune systems.
Trauma and PTSD have been associated with differences in inflammatory biomarkers. And chronic inflammation is involved in many diseases.
But none of those statements mean that trauma inevitably causes disease. Association is not destiny.
Healing trauma should never become another impossible standard people are required to meet in order to deserve health.
Instead, understanding the mind-body connection gives us another opportunity to care for ourselves more completely.
Medical care.
Psychological care.
Movement.
Somatic awareness.
Meditation.
Healthy relationships.
Boundaries.
Rest.
Nutrition.
Community.
And, for those who find meaning in them, complementary spiritual and energetic practices.
Healing does not have to belong exclusively to one world.
Sometimes healing is cognitive.
Sometimes it is emotional.
Sometimes it is physical.
Sometimes it is relational.
Sometimes it is spiritual.
And very often…it is all of them.
Journal Prompts for Reflection
1. When I feel stressed or unsafe, where do I notice it first in my body?
2. What survival behaviours did I learn earlier in life that I may no longer need in the same way today?
3. Which emotions were safe for me to express growing up—and which ones were not?
4. What does safety actually feel like in my body? Do I recognize it easily?
5. Are there relationships or environments in my current life that repeatedly keep my nervous system activated?
6. Where might I need stronger boundaries rather than better coping skills?
7. What forms of movement make my body feel supported rather than punished?
8. What helps me genuinely settle: nature, meditation, Reiki, music, movement, creativity, safe people, solitude or something else?
9. When my body reacts strongly, can I become curious about what it is protecting instead of immediately judging the reaction?
10. What would caring for my nervous system look like if I stopped treating healing as another thing I had to accomplish perfectly?
NOTE: This article is educational and is not intended to diagnose or treat any medical or mental-health condition. Persistent pain, inflammation or other physical symptoms deserve appropriate medical assessment. Trauma-focused treatment should be provided by appropriately qualified professionals when clinical mental-health care is needed.
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