By Dr. Tonya Westerbeke, DC | Back To Health Chiropractic
Let's be honest: you've probably already done the responsible thing. You've talked to your primary care doctor about the exhaustion that never lifts, the racing heart at 2 a.m., the stubborn weight around your middle that won't budge no matter what you cut from your plate. You've had bloodwork done. Maybe you've even had cortisol checked. And the results came back "normal" — which somehow made you feel worse, not better, because now you're left wondering if you're imagining all of it.
You're not imagining it. And you're far from alone.
Around 75% of U.S. adults report experiencing stress, and nearly seven in ten employed adults name work as a significant source of it. That stress doesn't just sit quietly in the background of your day — it triggers a very real, very physical cascade inside your body, starting with a hormone called cortisol.
Here's what you'll learn in this article:
- What cortisol actually does in your body (and why it's not the villain it's made out to be)
- How chronic stress and spinal dysfunction are more connected than most people realize
- What the current research says about chiropractic care and cortisol regulation — including a brand-new December 2025 clinical trial
- The signs your body may be sending you about cortisol imbalance
- When cortisol symptoms need a medical workup, not just an adjustment
- How the team at Back To Health approaches stress and nervous system care
This isn't about replacing your physician or promising a hormone "fix" in one visit. It's about understanding a piece of the puzzle that often gets left out of the conversation entirely: your nervous system.
8 Things You Need to Know About Cortisol and Chiropractic Care — Updated for 2026
1. Cortisol Isn't the Enemy — Dysregulation Is
Cortisol gets a bad reputation as "the stress hormone," but your body actually needs it. Produced by the adrenal cortex — the outer layer of your adrenal glands, which sit like little caps atop your kidneys — cortisol helps regulate blood sugar, blood pressure, inflammation, and your sleep-wake cycle. In a healthy person, cortisol naturally peaks in the early morning to help you wake up and get moving, then gradually tapers off throughout the day.
The problem isn't cortisol itself. It's what happens when the system that controls it — the hypothalamic-pituitary-adrenal (HPA) axis — gets stuck in overdrive. When your brain perceives ongoing threat (whether that's a real emergency or a relentless string of deadlines, financial pressure, or poor sleep), the HPA axis keeps signaling your adrenal glands to keep producing. Over time, that constant demand can throw off your body's natural cortisol rhythm entirely.
2. Your Nervous System Is the Command Center for Your Stress Response
Every signal that tells your adrenal glands to release cortisol travels through your nervous system first. The hypothalamus, a small structure at the base of your brain, monitors incoming signals from your body and environment. When it senses stress, it activates your sympathetic nervous system — the "fight or flight" branch — via a chain of nerve clusters along your spine called the sympathetic chain ganglia.
This is where your spine enters the picture. Your spine houses and protects the spinal cord, the main highway between your brain and the rest of your nervous system. When segments of the spine — particularly the cervical spine (your neck) and upper thoracic spine — lose their normal motion or alignment, a condition chiropractors refer to as a vertebral subluxation, it can create ongoing irritation to the nerves that exit at that level. Some researchers hypothesize this may act as a low-grade, chronic stressor on the nervous system, keeping the sympathetic "gas pedal" pressed down longer than it should be.
3. The Vagus Nerve Is Your Built-In Brake Pedal
If the sympathetic nervous system is the gas pedal, the vagus nerve is your brake. As the longest cranial nerve in your body, the vagus nerve is the primary driver of your parasympathetic nervous system — the "rest and digest" state that allows cortisol levels to come back down after a stressor passes. It runs from your brainstem, through your neck, and down into your chest and abdomen, influencing your heart rate, digestion, and inflammation along the way.
Upper cervical restriction and postural strain — think forward head posture from hours at a desk — can affect the tissues and nerve pathways surrounding the vagus nerve's route through the neck. Supporting healthy motion and alignment in this region is one of the reasons chiropractic care is often discussed in the context of nervous system balance, not just pain relief.
4. What the Research Actually Shows — Updated for 2026
This is where we want to be honest with you, because the science here is genuinely still developing, and we'd rather give you the real picture than an oversimplified one.
A brand-new December 2025 randomized controlled trial, published in PLOS ONE, tracked cortisol and other biomarkers in adults receiving 12 weeks of chiropractic care compared to a sham-treatment group. The trial was conducted at a rehabilitation center in Pakistan, with adult participants randomly assigned to receive either real chiropractic care or a sham (placebo) treatment. The results were more nuanced than a simple "cortisol went down": saliva cortisol was significantly higher in the chiropractic group at 12 weeks, while serum cortisol was significantly lower at the 16-week follow-up, four weeks after care had stopped — a pattern researchers linked to the body's natural inflammation-regulation process during tissue adaptation and recovery.
Earlier research offers a mixed but intriguing picture. A 2002 study in the Journal of Manipulative and Physiological Therapeutics found that a single chiropractic adjustment didn't significantly change basal (baseline) salivary cortisol in healthy volunteers — but cortisol levels did progressively decrease in the 60 minutes following the adjustment, suggesting the treatment itself wasn't registering as a stressor to the body.
A smaller 1998 study out of Macquarie University's Chiropractic Research Centre followed nine people through six weeks of care and found a statistically significant reduction in salivary cortisol over the course of the study. And a 2020 case report published in the Journal of Contemporary Chiropractic documented a 40-year-old patient whose salivary cortisol and self-reported anxiety both declined over 12 visits of chiropractic care for chronic neck pain and headaches.
The honest takeaway: no single study proves chiropractic care "lowers cortisol" in a universal, guaranteed way. But across two decades of research, a consistent theme keeps surfacing — spinal adjustments appear to influence the HPA axis and the body's stress-response pathways in measurable ways. That's a meaningfully different, and more supportable, claim than a miracle cure — and it's exactly why our team continues to watch this research closely.
5. Signs Your Cortisol Rhythm May Be Off
You don't need a lab test to notice some of the everyday signals of a dysregulated stress response. Common patterns include:
- Feeling exhausted in the morning but wired and unable to wind down at night
- Cravings for salty or sugary foods, especially in the afternoon
- Stubborn weight gain around the midsection despite consistent habits
- Getting sick more often, or slower recovery from minor illness
- Tension headaches, jaw clenching, or neck and shoulder tightness
- Irritability, anxiety, or a short fuse that feels out of character
- Difficulty falling or staying asleep
It's worth noting that "adrenal fatigue" — a term you may have seen online — isn't a diagnosis recognized by the Endocrine Society or the broader medical community. What's real, and well documented, is HPA axis dysregulation: a disruption in the communication loop between your brain and adrenal glands. That distinction matters, because it points you toward legitimate care rather than unproven supplements or protocols.
6. How Chiropractic Adjustments May Support a Healthier Stress Response
At Back To Health, our team's approach centers on the idea that your nervous system is the foundation of your health — and that a body under chronic physical stress from spinal misalignment may struggle to fully downshift out of "fight or flight," even when the external stressor has passed.
A chiropractic adjustment is a precise, controlled force applied to a specific spinal joint to restore normal motion. When that joint has been restricted, the adjustment can reduce nerve irritation at that level and support the signaling between your brain and body. Many patients describe a noticeable sense of physical release and calm following an adjustment — which lines up with research showing chiropractic care is associated with increases in oxytocin, a hormone connected to relaxation and bonding, alongside the cortisol changes discussed above.
We're not here to settle for guesswork, though. Our team pairs adjustments with a broader look at your posture, movement patterns, and daily habits, because your nervous system doesn't operate in isolation from the rest of your life.
7. Chiropractic Care Works Best as Part of a Bigger Picture
You were built for resilience, not for a permanent state of high alert. But no single intervention — chiropractic care included — is a complete answer to chronic stress on its own. The most meaningful, lasting results we see happen when spinal care is paired with:
- Sleep consistency — a stable wake time does more for cortisol rhythm than almost anything else
- Movement — regular, moderate exercise (a walk along the Lake Michigan shoreline counts) helps metabolize excess cortisol
- Nutrition — steady blood sugar reduces the number of "false alarms" your adrenal glands respond to
- Breathwork or mindfulness practices — even five minutes of slow, diaphragmatic breathing directly stimulates the vagus nerve
- Community connection — West Michigan has no shortage of local walking groups, yoga studios, and wellness meetups worth exploring in Zeeland, Portage, and Muskegon
This might be uncomfortable, but it's true: there's no shortcut that replaces consistency. What if it could be easier, though, when your nervous system isn't working against you?
8. What to Expect From a Visit Focused on Stress and Nervous System Health — Updated for 2026
If you come to Back To Health with concerns about stress, fatigue, or cortisol-related symptoms, your first visit isn't just a quick adjustment. Our team takes a full history, assesses your spine and posture, and talks through your sleep, stress load, and daily habits before building a care plan. For many patients, that plan includes a combination of adjustments, soft-tissue work, and simple at-home strategies to support your nervous system between visits. You get to rewrite the story — one visit doesn't define your health, but a consistent plan can genuinely shift your trajectory.
When to Seek Medical Attention
Chiropractic care can be a valuable part of supporting your nervous system, but it is not a substitute for medical evaluation when your symptoms point to something more serious. Please contact your physician or an endocrinologist promptly if you experience:
- Rapid, unexplained weight gain or loss
- Purple or pink stretch marks on your abdomen, thighs, or arms
- Significant muscle weakness, especially in your upper arms and thighs
- Easy bruising or thinning skin
- Persistent high blood pressure that isn't responding to treatment
- Extreme fatigue accompanied by low blood pressure, salt cravings, or darkening skin
- Panic attacks, chest pain, or a rapid heartbeat that feels severe or new
- Thoughts of self-harm or feeling unable to cope
These can be signs of conditions like Cushing's syndrome, Addison's disease, or a mental health crisis that require immediate, dedicated medical or psychiatric care. If you're experiencing thoughts of self-harm, please reach out to the 988 Suicide & Crisis Lifeline by calling or texting 988 — support is available right now.
Frequently Asked Questions
What are the symptoms of high cortisol? Common signs include weight gain around the face and midsection, high blood pressure, mood swings, fatigue paired with difficulty sleeping, and slower wound healing. Because these symptoms overlap with many other conditions, a physician-ordered cortisol test is the only way to confirm a true hormonal imbalance.
Can chiropractic care lower cortisol naturally? Early and ongoing research suggests chiropractic adjustments may influence the HPA axis and the body's stress-response pathways, though findings across studies have been mixed rather than uniform. Our team views chiropractic care as one supportive piece of a broader stress-management approach — not a standalone cortisol treatment.
How long does it take to see cortisol changes after chiropractic care? There's no universal timeline, and individual responses vary widely. In the research discussed above, changes were measured anywhere from minutes after a single adjustment to 12 and 16 weeks into a longer course of care. Most patients describe feeling calmer within the same day of an adjustment, though measurable hormonal shifts take consistent care over time.
Is chiropractic care a substitute for therapy or stress management treatment? No. Chiropractic care addresses the physical, nervous-system side of stress, but it works best alongside — not instead of — mental health support, sleep care, and lifestyle changes. If you're managing anxiety, depression, or a diagnosed hormonal condition, we encourage you to keep your physician or therapist as part of your care team.
Can stress and high cortisol cause neck and back pain? Yes. Chronically elevated cortisol contributes to muscle tension, particularly in the neck, shoulders, and jaw, and can heighten your overall sensitivity to pain. Many patients who come to us for "just" neck pain are surprised to learn how much their stress load is contributing to it.
Conclusion
Your body isn't broken, and that "normal" bloodwork doesn't mean nothing is going on. Cortisol dysregulation is real, it's measurable, and — increasingly — research suggests your nervous system, including your spine, plays a role in how well your body regulates it. We're not here to promise a miracle. We're here to look at the whole picture: your spine, your habits, your stress load, and your goals — and to help you build a plan that actually holds up over time.
If you've been living in that wired-but-tired state and you're ready for a different approach, our team would love to talk with you.
Schedule online: bthclinics.com/locations
Or call us directly:
Zeeland: 616.546.3500
Portage: 269.345.2273
Muskegon: 231.830.1111
Not ready to book yet? Grab our free guide, The 5-Minute Nervous System Reset, with simple breathing and movement techniques you can start using today. [Download it here — just enter your name and email.]
Research & Sources
- Amjad I, Niazi IK, Kumari N, Ghani U, Rashid U, et al. (2025). "The Effects of 12 Weeks of Chiropractic Spinal Adjustments on Physiological Biomarkers in Adults: A Pragmatic Randomized Controlled Trial." PLOS ONE, 20(12): e0338730. Finding: Saliva cortisol was significantly increased in the chiropractic group at 12 weeks; serum cortisol was significantly decreased at the 16-week follow-up compared to baseline.
- Whelan TL, Dishman JD, Burke J, Levine S, Sciotti V. (2002). "The Effect of Chiropractic Manipulation on Salivary Cortisol Levels." Journal of Manipulative and Physiological Therapeutics, 25(3):149–153. Finding: No significant change in basal cortisol, but a progressive decrease in cortisol from pretreatment through 60 minutes post-adjustment (P<.05).
- Tuchin PJ. (1998). "The Effect of Chiropractic Spinal Manipulative Therapy on Salivary Cortisol Levels." Australasian Chiropractic & Osteopathy, 7(2):86–92. Finding: Statistically significant reduction in salivary cortisol over a five-week study (p<0.001) in nine subjects.
- Hughes FP. (2020). "Reduction of Cortisol Levels and Perceived Anxiety in a Patient Undergoing Chiropractic Management for Neck Pain and Headache: A Case Report and Review of the Literature." Journal of Contemporary Chiropractic, 3(1):14–20. Finding: Salivary cortisol and self-reported anxiety both declined over 12 chiropractic visits in a 40-year-old patient.
- American Psychological Association. (2025). Stress in America 2025: A Crisis of Connection.
- The American Institute of Stress. (2025). Stress prevalence data.
This article is for educational purposes and is not a substitute for individualized medical advice. Always consult your physician regarding any hormonal or endocrine concerns.
Dr. Tonya Westerbeke
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