Can Stress Trigger Autoimmune Disease? What the Research Shows

Part 4 of our Rain Barrel series. Catch up with Part 1: What If Your Genes Aren’t Your Destiny?

“I was fine until the divorce.” “Everything fell apart the year my mother died.” “It started after the worst job of my life.”

People living with autoimmune disease and other chronic illnesses tell these stories constantly. In the Rain Barrel model, the major life event is the final drop that makes an already-full barrel overflow. But is there real science behind the idea that stress can trigger chronic illness — or is it just memory looking for a reason? Here’s what the research shows.

The Largest Study Yet: Stress Disorders and 41 Autoimmune Diseases

In 2018, the Journal of the American Medical Association published a Swedish study by Huan Song and colleagues that followed 106,464 people diagnosed with stress-related disorders — including PTSD, acute stress reaction, and adjustment disorder — and compared them with more than a million matched people and 126,652 of their own siblings.

The result: people with a stress-related disorder had a 36% higher risk of developing autoimmune disease across 41 conditions, including rheumatoid arthritis, psoriasis, Crohn’s disease, and celiac disease. The association held up in the sibling comparison, which helps account for shared genes and upbringing. Interestingly, people with PTSD who consistently took SSRI medication in the first year after diagnosis had a lower relative risk — a hint that treating stress itself may matter.

The authors were clear that this is an observational study: it shows a robust association, not proof that stress alone causes autoimmunity. But it’s some of the strongest population-level evidence we have that the barrel analogy reflects something real.

Childhood Stress Leaves a Long Shadow

The Adverse Childhood Experiences (ACE) research, which grew out of a CDC–Kaiser Permanente collaboration, found that people with more childhood adversity had higher rates of heart disease, diabetes, depression, and other chronic conditions decades later. A 2009 analysis in Psychosomatic Medicine by Dube and colleagues found that a higher ACE score was associated with an increased likelihood of being hospitalized for an autoimmune disease in adulthood. For many people, the first drops in the barrel fell long before they could control them.

How Stress Gets Under the Skin: Allostatic Load

Neuroscientist Bruce McEwen introduced the concept of allostatic load in a landmark 1998 New England Journal of Medicine paper. Allostasis is your body’s ability to adapt — raising cortisol, adrenaline, heart rate, and blood sugar to meet a challenge. That’s healthy in short bursts. Allostatic load is the wear and tear that builds up when those systems are activated too often, for too long, or don’t shut off properly.

Several mechanisms help explain how chronic stress may push the immune system off balance:

• Glucocorticoid resistance. Cortisol normally calms inflammation. Research by Sheldon Cohen’s group (PNAS, 2012) found that chronic stress can make immune cells less responsive to cortisol’s signal, allowing inflammation to run hotter.
• Inflammatory signaling. Chronic stress is associated with higher levels of inflammatory messengers such as IL-6 and C-reactive protein.
• Viral reactivation. Stress can weaken immune control of latent viruses like Epstein-Barr virus (EBV), which has been strongly linked to multiple sclerosis and studied in lupus and other autoimmune conditions.
• Gut barrier changes. Stress affects gut motility, the microbiome, and intestinal permeability, which may matter in Crohn’s disease and ulcerative colitis.
• Hormone and thyroid effects. The stress axis interacts with thyroid and sex hormones, relevant to conditions like Hashimoto’s thyroiditis.
• Behavior. Stress erodes sleep, nutrition, movement, and the time to take care of yourself — adding more drops to the barrel.

Stress Shows Up in Measurable Ways

Other well-known studies make the same point from different angles. In a classic 1991 New England Journal of Medicine study, Cohen and colleagues exposed volunteers to cold viruses and found that people with higher psychological stress were more likely to get sick. In 1995, Kiecolt-Glaser and colleagues reported in The Lancet that caregivers of family members with dementia healed small standardized wounds more slowly than matched controls. And a 2004 PNAS study by Elissa Epel found that mothers with the highest perceived stress had shorter telomeres — a marker of cellular aging.

What Stress Doesn’t Do

Honesty matters here. Stress is not a universal cause of disease, and no one should feel their illness is their fault for “not managing stress.” Evidence does not show that psychological stress directly causes cancer, and many autoimmune conditions have strong genetic and environmental components. Sometimes a diagnosis follows a hard year simply because symptoms were already developing — or because a stressful period is when people finally see a doctor. The takeaway isn’t blame. It’s that recovery is a legitimate part of health care.

Lowering Your Stress Load: What Helps

• Treat stress disorders as real medical conditions. Therapy and, when appropriate, medication matter — the Song study’s SSRI finding is a reminder.
• Protect sleep, the body’s nightly reset for immune and hormonal regulation.
• Move gently and consistently. Regular moderate exercise lowers inflammatory markers over time.
• Stay connected. Social support is one of the most consistent buffers against stress-related illness.
• Practice down-regulation — slow breathing, meditation, time outdoors — to shift the nervous system out of fight-or-flight.
• Replenish what stress depletes, like magnesium, B vitamins, and vitamin C, under guidance.

How Core iV Therapy Supports Recovery

At Core iV Therapy in Herndon, VA, we see stress as one of the most overlooked drops in the barrel. Alongside the foundations — hydration, nutrients, open detox pathways, oxygen, and metabolic health — we offer recovery-focused modalities designed to help the body shift out of survival mode: PEMF therapy, the OPUS Soundbed, our red light therapy room, mild hyperbaric oxygen therapy, and nutrient support through IV vitamin therapy. For high-pressure professionals, our CEO Reset Packages bundle several of these together.

For a deeper look at how stress affects energy and metabolism, read The Hidden Cost of Chronic Stress. These services support wellbeing and complement — never replace — care from your physician, rheumatologist, or mental health provider.

Frequently Asked Questions

Can stress trigger autoimmune disease?

Research shows a strong association. A 2018 JAMA study of more than 106,000 people in Sweden found those with stress-related disorders such as PTSD had a 36% higher risk of developing autoimmune disease than matched individuals. The study was observational, so it shows association rather than proof that stress alone causes autoimmunity.

What is allostatic load?

Allostatic load, a concept introduced by neuroscientist Bruce McEwen, is the cumulative wear and tear on the body from repeated or prolonged activation of stress systems, including cortisol, adrenaline, blood pressure, and blood sugar responses.

How does chronic stress affect the immune system?

Chronic stress can make immune cells less responsive to cortisol, raise inflammatory markers such as IL-6, weaken control of latent viruses like Epstein-Barr virus, affect gut barrier function, and disrupt sleep and other habits that support immune balance.

Does stress cause cancer?

Current evidence does not show that psychological stress directly causes cancer. Stress can affect behaviors and immune function, but a cancer diagnosis following a stressful event does not mean the event caused it.

What does Core iV Therapy in Herndon, VA offer for stress recovery?

Core iV Therapy offers recovery-focused services including PEMF therapy, the OPUS Soundbed, red light therapy, mild hyperbaric oxygen therapy, and IV nutrient therapy. These support wellbeing alongside, not instead of, medical and mental health care.

Ready to Lighten the Load?

If life has been pouring water into your barrel, we’d love to help you build in recovery. Call Core iV Therapy at 866-426-7348, visit 108 Elden Street, Suite 15A, Herndon, VA 20170, or request a free phone consultation.

Research and References

1. Song H, et al. Association of stress-related disorders with subsequent autoimmune disease. JAMA. 2018;319:2388–2400. PubMed.
2. Dube SR, et al. Cumulative childhood stress and autoimmune diseases in adults. Psychosomatic Medicine. 2009;71:243–250.
3. McEwen BS. Protective and damaging effects of stress mediators. N Engl J Med. 1998;338:171–179.
4. Cohen S, et al. Chronic stress, glucocorticoid receptor resistance, inflammation, and disease risk. PNAS. 2012;109:5995–5999.
5. Cohen S, Tyrrell DA, Smith AP. Psychological stress and susceptibility to the common cold. N Engl J Med. 1991;325:606–612.
6. Kiecolt-Glaser JK, et al. Slowing of wound healing by psychological stress. The Lancet. 1995;346:1194–1196.
7. Epel ES, et al. Accelerated telomere shortening in response to life stress. PNAS. 2004;101:17312–17315.

This article is for educational purposes only and is not intended to diagnose or treat any disease. If you are struggling with stress, anxiety, or trauma, please reach out to a licensed healthcare or mental health professional.