When the Body Remembers

How trauma can show up as physical illness

Maybe you’ve moved on from what happened. You understand it. You’ve talked about it. You may have even forgiven the people involved and built a whole new life.

But sometimes the body hasn’t gotten the message.

Headaches. Stomach trouble. Restless sleep. Fatigue, or old symptoms that flare up when life gets stressful. You get checked out, the tests come back fine, and nothing quite explains why you still don’t feel well.

That doesn’t mean trauma “causes” illness. Genetics, infections, injuries, lifestyle, and many other things shape our health. But we’ve learned a lot about how overwhelming or long-lasting stress can leave a mark on the body. Trauma isn’t only something we remember. It can change how the body responds to stress.

The Alarm That Won’t Shut Off

Your stress response is built to keep you alive. When your brain senses danger, your heart speeds up, your muscles tense, and your body gets ready to fight, run, or freeze.

In a real emergency, that’s exactly what you want. The trouble starts when the alarm keeps sounding long after the danger is gone, sometimes for years.

Think of a smoke alarm. It’s supposed to go off when there’s a fire. Now imagine it gets so sensitive that it goes off every time someone burns a piece of toast.

That’s what trauma can do. Whether it came from one frightening event or years of living somewhere that didn’t feel safe, your brain learned to watch for danger. Now a tone of voice, an argument, a certain smell, or even a feeling in your body can set off the alarm before you know why.

You may know you’re safe. Your body may not agree.

Why It Shows Up in the Body

When the alarm goes off, your body releases stress hormones like adrenaline and cortisol. Those hormones don’t just affect your mood. They also affect digestion, sleep, pain, blood sugar, and your immune system.

When the alarm keeps going off without enough time to recover, the wear and tear adds up. Long-term stress has been linked with inflammation and with a higher risk of problems like high blood pressure, heart disease, and type 2 diabetes.

So let’s be clear: these symptoms are real. They are not “all in your head.”

It’s just as important not to assume trauma is behind every symptom. New, lasting, or worrying symptoms always deserve a proper medical workup. But when the tests don’t tell the whole story, it may be worth asking: Is my body still reacting to something my mind thinks is over?

The Hard Part Nobody Talks About

In my work, I look at the basics: food, movement, sleep, and the right support for the body. I also look at the life that body is living in.

That includes the people around you. It includes the patterns you’re living in. It includes the emotional climate you wake up to every day.

Over the years, I’ve seen people notice real improvement after stepping away from a hurtful relationship or changing how they deal with someone who kept their stress running high. That doesn’t prove the relationship caused their illness. But once you understand how chronic stress works, it makes sense to ask whether your surroundings keep setting off your alarm.

Here’s what we don’t say enough: making those changes is stressful too, even when it’s the right move.

Being honest about what isn’t working, setting boundaries, and breaking old patterns takes a lot of energy. It can mean leaving what’s familiar for something unknown. Even when you know a change is right, your nervous system may treat it as a threat at first.

Sometimes healing asks us to look at what we’re putting into our bodies. And sometimes it asks us to look at what, and whom, we continue allowing into our lives.

A Different Question

If you see yourself in this, I hope you come away with curiosity rather than another reason to worry about your health.

Keep working with your health care practitioners to look for physical causes. Alongside that, ask yourself: Where in my life do I feel safe, and where am I still on guard? What has my body been carrying? Are there patterns, relationships, or habits that keep setting off my stress response?

Healing rarely comes from changing just one thing. It usually means caring for the body while paying attention to the world it’s trying to heal in.

Sometimes the biggest shift starts with a new question. Instead of only asking, “What’s wrong with me?” try asking, “What does my body need from me now?”

Authored by Christen Resmo, RN, BSN, HNB-BC

Christen is a Board-Certified Holistic Nurse with more than 35 years of experience in hospital, high-acuity, and integrative care, including over two decades in private practice. She works with people whose health has been affected by chronic stress and trauma, using a trauma-informed, whole-person approach that focuses on nervous system regulation, stress reduction, and nutrition. Christen is a member of the It’s My Health Advisory Council.

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