The Hidden Cost of Trauma: How Chronic Stress Can Affect Your Mind, Body, and Relationships
Trauma is often talked about as something that happened in the past.
But sometimes, the event ends while its effects continue.
You may be physically safe now and still find yourself constantly scanning for what could go wrong. You may struggle to rest without feeling guilty, become overwhelmed by conflict, have difficulty sleeping, experience chronic tension or pain, or feel as though your body never fully settles.
For some people, the impact of trauma extends beyond emotional distress. Research has found associations between trauma-related stress and a range of physical and mental health concerns, including sleep difficulties, chronic pain, cardiovascular disease, metabolic conditions, anxiety and depression.
This does not mean trauma directly causes every health problem someone develops. Chronic illnesses are influenced by many factors, including genetics, environment, access to health care, socioeconomic conditions, health behaviours and other medical factors.
It also does not mean that experiencing trauma guarantees poor health.
Trauma can increase risk without determining your future.
Understanding that distinction matters.
The goal is not to make you afraid of what trauma has done to your body. It is to better understand why experiences that happened years ago can sometimes continue to affect how you feel, respond, relate and care for yourself today.
Trauma Does Not Only Live in Your Thoughts
When something threatening happens, your body has systems designed to help you survive.
Your heart rate may change.
Your muscles prepare for action.
Your attention becomes focused on potential danger.
Your body redirects resources toward getting you through what is happening.
These responses are protective.
The problem is not that your body responded to danger.
The difficulty can come when your stress-response systems continue reacting as though danger is nearby even after circumstances have changed.
For someone who experienced chronic abuse, neglect, instability, violence or other prolonged adversity, being highly alert may once have been necessary.
You may have learned to:
Pay close attention to other people's moods.
Anticipate conflict.
Stay quiet to avoid upsetting someone.
Suppress your own needs.
Remain productive because slowing down did not feel safe.
Disconnect from emotions when they became overwhelming.
Handle everything yourself because depending on others felt unreliable.
These responses can make sense in the context in which they developed.
Years later, however, your environment may have changed while some of those protective responses remain.
Your Nervous System May Become Used to Being “On”
People sometimes describe this as feeling unable to switch off.
You may notice:
Constant tension in your shoulders, jaw or body.
Difficulty relaxing.
Feeling startled easily.
Irritability.
Racing thoughts.
Feeling restless even when nothing is happening.
Always anticipating the next problem.
Difficulty concentrating.
Feeling exhausted but unable to slow down.
Other people experience almost the opposite.
Instead of constantly feeling activated, they may feel:
Numb.
Disconnected.
Emotionally shut down.
Exhausted.
Unmotivated.
Unable to think clearly when overwhelmed.
Trauma responses are not identical from person to person.
Research examining adverse childhood experiences has found differences in physiological stress responses later in life, including changes in cardiovascular and cortisol responses to acute stress. Importantly, researchers do not simply find that trauma makes stress hormones “high all the time.” Stress-response patterns can be more complicated than that.
Your body is not malfunctioning because it responded to experiences that felt threatening.
It may have learned a pattern of protection that no longer fits your present circumstances.
Trauma and Sleep
Sleep is often one of the first places prolonged stress becomes noticeable.
You might be completely exhausted and still struggle to fall asleep.
Perhaps your mind becomes active as soon as everything gets quiet.
You replay conversations.
You think about tomorrow.
You wake frequently.
You have nightmares.
Or you sleep for many hours and still wake up feeling depleted.
Systematic reviews have found associations between adverse childhood experiences and sleep disturbances later in life.
This relationship can also become cyclical.
Stress can interfere with sleep, while insufficient or disrupted sleep can make emotional regulation, concentration and coping with stress more difficult the following day.
Sometimes what looks like “I am terrible at sleeping” may deserve a more compassionate question:
“What makes it difficult for my mind and body to fully settle?”
Trauma and Chronic Pain
The relationship between trauma and physical pain is another area receiving increasing research attention.
A large 2023 systematic review and meta-analysis involving more than 800,000 adults found that exposure to adverse childhood experiences was associated with increased odds of reporting chronic pain in adulthood. The association became stronger as the number of reported adverse childhood experiences increased.
A 2026 systematic review examining people living with chronic pain similarly found connections between adverse childhood experiences, psychological well-being, pain outcomes and quality of life, while also emphasizing limitations in the research.
This does not mean pain is “all in your head.”
Pain is real.
Someone with chronic pain deserves appropriate medical assessment and treatment regardless of whether they also have a trauma history.
Instead, the research suggests that our physical and psychological experiences cannot always be separated into completely different boxes.
The nervous system, stress, sleep, mood, previous experiences, injury, illness and many other factors can interact with how pain is experienced.
Trauma and Cardiovascular Health
Researchers have also examined whether prolonged trauma-related stress is associated with cardiovascular health.
The clearest evidence in this area involves post-traumatic stress disorder (PTSD) rather than trauma exposure alone.
A 2024 systematic review and meta-analysis involving more than 335,000 participants found that people with PTSD had a higher subsequent risk of cardiovascular disease, including myocardial infarction and stroke.
Other reviews have reached similar conclusions.
That does not mean that everyone who experiences trauma—or even everyone diagnosed with PTSD—will develop heart disease.
Cardiovascular disease has many contributors.
Rather, PTSD appears to be one potential risk factor among many, and researchers are examining several possible pathways, including changes in physiological stress systems, sleep, inflammation, health behaviours and the effects of chronic psychological distress.
This is another reason mental and physical health should not be treated as entirely separate.
Trauma and Metabolic Health
Adverse childhood experiences have also been associated with metabolic conditions.
A systematic review and meta-analysis involving 49 studies found that adults reporting adverse childhood experiences had higher odds of diabetes, with greater cumulative adversity generally associated with greater risk.
Again, association is not the same as direct causation.
Researchers believe the pathway is likely complex and may involve a combination of biological stress processes, socioeconomic circumstances, sleep, medication, food access, physical activity, substance use and other health-related factors across the lifespan.
It would therefore be inaccurate—and unfair—to tell someone:
“Your trauma caused your diabetes.”
What the research allows us to say is much more careful:
People exposed to significant adversity appear, on average, to experience increased risk for some chronic health conditions later in life.
What About Inflammation?
You may have seen statements online such as:
“Trauma causes inflammation.”
The actual research is more nuanced.
An earlier meta-analysis found associations between childhood trauma and several inflammatory markers in adulthood.
However, a later review found much more mixed results, with many studies showing no significant association after considering factors such as age, sex, body mass index and the particular type of adversity experienced.
So while inflammation is one possible biological pathway researchers continue to investigate, the evidence does notsupport reducing trauma to a simple equation of:
Trauma → inflammation → disease.
Human health is more complicated than that.
Trauma Can Affect How We Care for Ourselves
Not every pathway between trauma and health is biological.
Sometimes the connection involves the strategies people developed to cope.
For example, someone living with overwhelming stress may:
Use alcohol or substances to temporarily escape painful emotions.
Eat for comfort or lose their appetite under stress.
Avoid medical appointments because vulnerability feels uncomfortable.
Work excessively.
Have difficulty resting.
Struggle to maintain routines.
Put everyone else's needs ahead of their own health.
Stay awake late because nighttime is the only time they feel they have to themselves.
Become so accustomed to discomfort that they minimize physical symptoms.
Looking at these behaviours through a trauma-informed lens changes the question.
Instead of:
“Why don't you just take better care of yourself?”
we can ask:
“What need has this behaviour been trying to meet?”
A coping strategy can have consequences and still have developed for a reason.
Understanding the function of a behaviour does not mean we have to keep it.
It gives us a more compassionate place from which to change it.
The Emotional Cost Can Be Significant Too
The effects of trauma are not limited to physical health.
Trauma and adverse childhood experiences are associated with increased risk for several mental health difficulties, including anxiety, depression and post-traumatic stress symptoms.
But sometimes the emotional cost is quieter.
You may function very well on the outside.
You work.
You parent.
You take care of everyone.
You get things done.
And underneath that, you may experience:
Persistent self-criticism.
Difficulty trusting yourself.
Fear of disappointing people.
Constant overthinking.
Feeling responsible for other people's emotions.
Emotional exhaustion.
Guilt when resting.
Difficulty asking for help.
Feeling disconnected from yourself.
A sense that you are always surviving rather than actually living.
Not everyone who experiences these things has a trauma history.
But for some people, the pattern becomes clearer when they begin understanding what they learned about safety, relationships and themselves earlier in life.
Trauma Can Have a Cost in Relationships
Survival strategies can also follow us into relationships.
Perhaps you learned that conflict meant something bad was about to happen.
Now even a small disagreement makes your body react as though the relationship is in danger.
Maybe relying on people repeatedly led to disappointment.
Now you pride yourself on needing nobody—but feel exhausted from carrying everything alone.
Maybe expressing your needs was criticized.
Now you tell people:
“It's fine.”
even when it isn't.
Maybe you became very good at reading everyone else's emotional state.
Now you automatically prioritize your partner's feelings before asking yourself what you feel.
These patterns may affect:
Boundaries.
Intimacy.
Communication.
Trust.
Conflict.
Asking for support.
Feeling safe being vulnerable.
Knowing what you want.
Believing your needs matter.
This is one of the hidden costs of trauma.
Sometimes survival requires becoming very good at adapting to everyone around you.
Healing may involve learning that you are allowed to exist in relationships without constantly adapting yourself away.
“But I’m Fine. What Happened Was Years Ago.”
You may genuinely be doing well in many parts of your life.
Having a trauma history does not mean you are secretly unwell.
It is also possible to have processed some experiences while still noticing that others affect you.
Healing is rarely a simple division between:
healed
and
unhealed.
You can have made tremendous progress and still become activated by certain situations.
You can understand your childhood and still struggle with boundaries.
You can leave an abusive relationship and still second-guess yourself years later.
You can forgive someone and still acknowledge that what happened affected you.
You can build a beautiful life while continuing to work through parts of your story.
Your Body Is Not Keeping Score to Punish You
When people learn about the relationship between trauma and physical health, it can become frightening.
You may think:
Have I permanently damaged my body?
That is not the message to take from this research.
Population-level studies tell us about probabilities and associations.
They cannot predict an individual person's future.
Your health is influenced by many interacting factors, and people demonstrate considerable resilience following trauma and adversity.
Understanding the possible health effects of trauma should create more compassion and access to support, not another reason to blame yourself.
You did not choose what happened to you.
And you do not need to perfectly “heal” in order to deserve physical or emotional well-being.
What Does Healing Actually Look Like?
Healing from trauma does not necessarily mean talking through every painful memory.
It also does not mean convincing yourself that the past was okay.
Depending on the person, healing may involve:
Learning to notice when your nervous system is responding to an old threat.
Developing ways to ground yourself in the present.
Improving sleep and daily routines.
Learning emotional regulation skills.
Recognizing and responding to your own needs.
Practising boundaries.
Reducing shame and self-criticism.
Learning that rest does not need to be earned.
Developing healthier ways of coping with distress.
Rebuilding trust in yourself.
Creating relationships where disagreement does not equal danger.
Reconnecting with your identity, values and voice.
It can also mean taking your physical health seriously.
Mental health care should complement, not replace, appropriate medical care.
Persistent pain, fatigue, gastrointestinal problems, sleep difficulties, cardiovascular symptoms or other physical concerns should not automatically be attributed to trauma. They deserve appropriate medical assessment.
You can address psychological stress and investigate physical symptoms.
It does not have to be one or the other.
Maybe the Question Is Not “What Is Wrong With Me?”
For years, you may have looked at some of your patterns and wondered:
Why can't I relax?
Why do I overthink everything?
Why do I always put everyone else first?
Why does conflict affect me so much?
Why am I exhausted even when everything seems fine?
Trauma-informed work can offer a different starting point.
Instead of:
“What is wrong with me?”
you might begin asking:
“What happened, what did I learn to do to survive it, and what do I need now?”
Sometimes behaviours that feel frustrating today developed because, at another point in your life, they helped you get through something difficult.
Understanding that does not mean staying stuck in them.
It means change can begin from understanding rather than shame.
Trauma-Informed Counselling in Alberta
At Flor Counselling, I provide virtual trauma-informed counselling across Alberta for adults navigating the impacts of childhood adversity, trauma, harmful or high-conflict relationships, anxiety, people-pleasing, difficulty setting boundaries and challenges trusting themselves.
Therapy can provide space to understand how your experiences may continue to influence your emotions, relationships and responses today while developing ways of living that better reflect your current needs and values.
The goal is not to erase your history.
It is to help you have more choice in how you live your life now.
References & Further Reading
Public Health Agency of Canada. Trauma and violence-informed approaches to policy and practice. Government of Canada.
https://www.canada.ca/en/public-health/services/publications/health-risks-safety/trauma-violence-informed-approaches-policy-practice.html
Public Health Agency of Canada. (2026). Child maltreatment in Canada: Prevalence and gender differences among youth. Health Promotion and Chronic Disease Prevention in Canada, 46(2).
https://www.canada.ca/en/public-health/services/reports-publications/health-promotion-chronic-disease-prevention-canada-research-policy-practice/vol-46-no-2-2026/child-maltreatment-canada-prevalence-gender-differences-youth.html
Bussières, A., Hancock, M. J., Elklit, A., et al. (2023). Adverse childhood experience is associated with an increased risk of reporting chronic pain in adulthood: A systematic review and meta-analysis. European Journal of Psychotraumatology, 14(2), 2284025.
https://doi.org/10.1080/20008066.2023.2284025
Gkiouzeli, A., Brennstuhl, M.-J., Couraillon, A., et al. (2026). From childhood struggles to adult strains: A systematic review of the impact of adverse childhood experiences on psycho-emotional functioning, pain outcomes, and quality of life in populations experiencing chronic pain. British Journal of Pain.
https://doi.org/10.1177/20494637261429225
Vadukapuram, R., Shah, K., Ashraf, S., et al. (2022). Adverse childhood experiences and their impact on sleep in adults: A systematic review. The Journal of Nervous and Mental Disease, 210.
https://doi.org/10.1097/NMD.0000000000001480
Satapathy, P., et al. (2024). Cardiovascular impact of post-traumatic stress disorder: A systematic review and meta-analysis. Current Problems in Cardiology.
https://doi.org/10.1016/j.cpcardiol.2024.102632
Huang, H., Yan, P., Shan, Z., et al. (2015). Adverse childhood experiences and risk of type 2 diabetes: A systematic review and meta-analysis. Metabolism, 64(11), 1408–1418.
https://doi.org/10.1016/j.metabol.2015.08.019
Baumeister, D., Akhtar, R., Ciufolini, S., Pariante, C. M., & Mondelli, V. (2016). Childhood trauma and adulthood inflammation: A meta-analysis of peripheral C-reactive protein, interleukin-6 and tumour necrosis factor-α. Molecular Psychiatry, 21, 642–649.
https://doi.org/10.1038/mp.2015.67
Brown, M., et al. (2021). Inflammation and early life stress: An updated review of childhood trauma and inflammatory markers in adulthood. Pharmacology Biochemistry and Behavior, 211, 173291.
https://doi.org/10.1016/j.pbb.2021.173291
