“Nervous system regulation” has become one of those phrases you hear everywhere, from therapy rooms to social media. It is a useful idea, but it often gets explained vaguely. In this article I want to set out clearly what your nervous system is, what it does in your body, what happens when it stays stuck in a stressed state, and why hypnotherapy is one of the more direct ways of helping it settle. I will also be honest about what the research does and does not show.

What Is the Nervous System?
Your nervous system is the body’s communication network. It has two main parts:
- The central nervous system: your brain and spinal cord, which take in information, make sense of it and decide how to respond.
- The peripheral nervous system: the nerves that carry messages between the brain and the rest of the body, including your muscles, skin and internal organs.
When people talk about “regulating” the nervous system, they usually mean one particular branch of it: the autonomic nervous system. This is the part that runs automatically, without you having to think about it. It controls your heart rate, breathing, blood pressure, digestion, sweating, muscle tension and much more.
What the Autonomic Nervous System Does in Your Body
The autonomic nervous system has two main branches that work together, a little like an accelerator and a brake.
The sympathetic branch (the accelerator). This prepares you for action. When you sense a threat or a challenge, it raises your heart rate, speeds up your breathing, tenses your muscles, sharpens your attention and sends blood away from digestion towards your limbs. Alongside it, the body releases stress hormones such as adrenaline and cortisol. This is the familiar “fight or flight” response.
The parasympathetic branch (the brake). This helps you rest, recover and digest. It slows the heart, deepens and steadies breathing, supports digestion and allows the body to repair itself. Much of this work is carried out by the vagus nerve, a long nerve running from the brainstem to the heart, lungs and gut.
Neither branch is “good” or “bad”. A healthy nervous system is a flexible one. It speeds up when you need energy, for a presentation, a run or a difficult conversation, and then returns to a calmer baseline when the moment has passed. That ability to shift up and come back down is what regulation really means.
One common way researchers measure this flexibility is heart rate variability (HRV), the natural variation in time between heartbeats. Higher HRV at rest generally reflects stronger parasympathetic activity and a more adaptable system. Lower HRV is associated with chronic stress and a range of health problems.
What Happens When the Nervous System Is Not Regulated?
The stress response is designed to be short-lived. Problems start when it is switched on too often, too strongly, or for too long, and the body does not get the chance to return to baseline. The neuroscientist Bruce McEwen described this cumulative wear and tear as “allostatic load”: the same stress systems that protect us in the short term can contribute to damage when they are overused over months and years (McEwen, 1998).
Prolonged activation of the stress system has been linked with a wide range of problems, including anxiety and low mood, disturbed sleep, digestive difficulties, raised blood pressure, and changes in immune function (Chrousos, 2009). In everyday life, a dysregulated nervous system often shows up as:
- Feeling “on” all the time: restless, irritable, easily startled, unable to switch off in the evening.
- Sleep problems: lying awake with a racing mind, or waking at 3am with your heart pounding.
- Gut symptoms: the gut is closely wired to the nervous system, which is why stress so often shows up as bloating, pain, urgency or constipation. I have written more about this in my article on the gut-brain axis.
- Physical tension: tight jaw, shoulders or chest, headaches, shallow breathing.
- Anxiety and panic: the body reacting as if there is danger when, logically, there is not.
- Shutdown and exhaustion: for some people the opposite happens. After a long period of stress they feel flat, numb, foggy and depleted, which is often what burnout feels like from the inside.
You may have come across polyvagal theory, developed by Stephen Porges, which describes these states in terms of safety, “fight or flight” and “shutdown” (Porges, 2007). Many therapists find it a helpful way to talk about how the body responds to stress. It is worth knowing, though, that several of its specific biological claims have been strongly questioned by other researchers (Grossman, 2023). I use it as a useful map for clients rather than as settled science. The underlying point is well supported: the body’s stress systems can become stuck, and that affects how you feel physically and emotionally.
Why You Cannot Simply “Think” Your Way Calm
Most people I see already know they are stressed. They have been told to relax, and many have tried. The difficulty is that the autonomic nervous system is, by definition, automatic. It responds to how safe or threatened your body feels, which is shaped by past experience, habits and learned associations, not just by what you consciously decide. You can tell yourself there is nothing to worry about and still feel your heart racing.
This is why approaches that work directly with the body’s automatic responses, rather than only with conscious reasoning, can be so helpful. Hypnotherapy is one of them.
The Role of Hypnotherapy in Nervous System Regulation
Hypnosis is a state of focused attention and reduced peripheral awareness, characterised by an enhanced capacity to respond to suggestion (Elkins et al., 2015). It is not sleep, and you remain aware and in control throughout. You can read more about how hypnotherapy works here. There are three main reasons it is particularly suited to calming the nervous system.
1. It shifts the body towards a calmer state
A scoping review of studies measuring the body’s responses during hypnosis found that results “converge to show reductions in sympathetic responses and/or increases in parasympathetic tone under hypnosis” (Fernandez et al., 2022). In practice, that meant changes such as lower heart rate, lower skin conductance (a marker of stress arousal) and heart rate variability patterns associated with parasympathetic activity. In other words, hypnosis tends to ease off the accelerator and apply the brake.
2. It changes how the brain connects with the body
Brain imaging research at Stanford found that during hypnosis, activity decreased in the dorsal anterior cingulate cortex, an area involved in monitoring for threat and conflict. Connectivity increased between the dorsolateral prefrontal cortex and the insula, a region that processes signals from inside the body (Jiang et al., 2017). The authors suggested this may help explain how hypnosis can influence bodily processes such as pain, heart rate and the stress response. Put simply, hypnosis appears to change the conversation between the thinking brain and the body.
3. It helps retrain automatic responses
Relaxation on its own brings short-term relief. What hypnotherapy adds is the chance to rehearse new responses to the specific situations that set off your stress, whether that is a crowded Tube carriage, an email from your manager, a medical appointment or lying in bed at night. Over time, the body can learn to meet those situations with a calmer response. I also teach every client self-hypnosis, so they have a practical way of settling their nervous system between sessions and long after our work together ends.
There is also evidence that this effect reaches beyond how people feel in the moment. In a study of medical students facing exams, those who were trained in hypnosis were, on average, protected from the drop in immune function seen in students who did not receive the training (Kiecolt-Glaser et al., 2001).
Potential Uses of Hypnotherapy for Nervous System Regulation
Because an unsettled nervous system shows up in so many different ways, hypnotherapy can be relevant to a wide range of difficulties. The strength of the evidence varies from area to area, so here is an honest summary.
Anxiety and chronic stress. A 2019 meta-analysis of 15 controlled studies found that hypnosis produced substantial reductions in anxiety compared with control conditions (Valentine et al., 2019). Read more in my guide to hypnotherapy for anxiety and my article on what chronic stress does to your body.
Panic attacks. Panic is the stress response firing at full strength without a real threat. Hypnotherapy helps reduce the body’s sensitivity to the early physical signs that often spiral into panic. See hypnotherapy for panic attacks.
IBS and gut symptoms. This is one of the best-researched uses of hypnotherapy. Gut-directed hypnotherapy is recommended by NICE for people with IBS whose symptoms have not responded to other treatment. In a Swedish study of patients who had received hypnotherapy for IBS, most of those who improved still felt the benefit up to seven years later (Lindfors et al., 2012). Read more in my guide to hypnotherapy for IBS.
Pain. A meta-analysis of 85 controlled experimental trials found that hypnosis produced meaningful pain relief, with the largest benefits in people who respond more readily to hypnosis (Thompson et al., 2019).
Sleep. A systematic review of 24 studies found that just over half reported benefits of hypnosis for sleep, although the authors noted that many of the studies were small and of limited quality (Chamine et al., 2018). In my experience, sleep often improves once the nervous system is calmer during the day. See hypnotherapy for insomnia.
Burnout and overwhelm. Research specific to burnout is still limited, but the same principles apply: reducing ongoing stress arousal, restoring rest, and changing the automatic patterns that keep people pushing past their limits. See hypnotherapy for burnout.
Is Hypnotherapy Right for You?
Hypnotherapy may help if you often feel wired, tense or on edge, if stress is showing up in your body through sleep, digestion or pain, or if you have tried to relax and found your body simply does not follow.
It is not a replacement for medical care. If you have new or unexplained physical symptoms, please see your GP first so that other causes can be ruled out. If you are experiencing severe depression, psychosis or thoughts of harming yourself, please speak to your GP or contact NHS 111 or Samaritans on 116 123. Hypnotherapy works best as part of your overall care, not instead of it.
Frequently Asked Questions
What does “nervous system regulation” actually mean? It means your nervous system can respond to challenges and then return to a calm, balanced state afterwards. A well-regulated system is flexible, not permanently calm.
How quickly can hypnotherapy calm my nervous system? Many people feel noticeably calmer after their first session. Longer-lasting change usually comes from a short course of sessions and regular self-hypnosis practice. I have written more about how many sessions people usually need.
Is hypnotherapy the same as relaxation or meditation? They overlap, as all three can calm the body. Hypnotherapy differs in that it is guided and tailored to you, and it uses suggestion and rehearsal to change specific automatic responses, not only to relax you in the moment.
Can I do this online? Yes. Many of my clients work with me online via Zoom, and the process is the same as in person.
In Person in London or Online
I see clients in person at 364 City Road, London EC1V 2PY, a short walk from Angel and Old Street stations, and online anywhere in the UK and abroad.
Ready to Take the Next Step?
If your body has been stuck in stress mode for too long, you do not have to keep pushing through on your own. I offer a free, no-obligation 15-minute consultation to talk through what you are experiencing and whether hypnotherapy could help.
Book your free consultation or call 020 7101 3284.
References
- Chamine, I., Atchley, R. & Oken, B. S. (2018). Hypnosis intervention effects on sleep outcomes: a systematic review. Journal of Clinical Sleep Medicine, 14(2), 271-283. https://doi.org/10.5664/jcsm.6952
- Chrousos, G. P. (2009). Stress and disorders of the stress system. Nature Reviews Endocrinology, 5(7), 374-381. https://doi.org/10.1038/nrendo.2009.106
- Elkins, G. R., Barabasz, A. F., Council, J. R. & Spiegel, D. (2015). Advancing research and practice: the revised APA Division 30 definition of hypnosis. International Journal of Clinical and Experimental Hypnosis, 63(1), 1-9. https://doi.org/10.1080/00207144.2014.961870
- Fernandez, A., Urwicz, L., Vuilleumier, P. & Berna, C. (2022). Impact of hypnosis on psychophysiological measures: a scoping literature review. American Journal of Clinical Hypnosis, 64(1), 36-52. https://doi.org/10.1080/00029157.2021.1873099
- Grossman, P. (2023). Fundamental challenges and likely refutations of the five basic premises of the polyvagal theory. Biological Psychology, 180, 108589. https://doi.org/10.1016/j.biopsycho.2023.108589
- Jiang, H., White, M. P., Greicius, M. D., Waelde, L. C. & Spiegel, D. (2017). Brain activity and functional connectivity associated with hypnosis. Cerebral Cortex, 27(8), 4083-4093. https://doi.org/10.1093/cercor/bhw220
- Kiecolt-Glaser, J. K., Marucha, P. T., Atkinson, C. & Glaser, R. (2001). Hypnosis as a modulator of cellular immune dysregulation during acute stress. Journal of Consulting and Clinical Psychology, 69(4), 674-682. https://doi.org/10.1037/0022-006X.69.4.674
- Lindfors, P., Unge, P., Nyhlin, H., Ljótsson, B., Björnsson, E. S., Abrahamsson, H. & Simrén, M. (2012). Long-term effects of hypnotherapy in patients with refractory irritable bowel syndrome. Scandinavian Journal of Gastroenterology, 47(4), 414-420. https://doi.org/10.3109/00365521.2012.658858
- McEwen, B. S. (1998). Protective and damaging effects of stress mediators. New England Journal of Medicine, 338(3), 171-179. https://doi.org/10.1056/NEJM199801153380307
- National Institute for Health and Care Excellence (2008, updated 2017). Irritable bowel syndrome in adults: diagnosis and management (CG61). https://www.nice.org.uk/guidance/cg61
- Porges, S. W. (2007). The polyvagal perspective. Biological Psychology, 74(2), 116-143. https://doi.org/10.1016/j.biopsycho.2006.06.009
- Thompson, T., Terhune, D. B., Oram, C., Sharangparni, J., Rouf, R., Solmi, M., Veronese, N. & Stubbs, B. (2019). The effectiveness of hypnosis for pain relief: a systematic review and meta-analysis of 85 controlled experimental trials. Neuroscience & Biobehavioral Reviews, 99, 298-310. https://doi.org/10.1016/j.neubiorev.2019.02.013
- Valentine, K. E., Milling, L. S., Clark, L. J. & Moriarty, C. L. (2019). The efficacy of hypnosis as a treatment for anxiety: a meta-analysis. International Journal of Clinical and Experimental Hypnosis, 67(3), 336-363. https://doi.org/10.1080/00207144.2019.1613863














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