One of the most common things clients say to me early in our work together is some version of: “I’ve always been like this.” Always anxious. Always a worrier. Always someone who freezes under pressure or struggles to feel good enough.

I understand why people feel that way. When a pattern has been running for ten, twenty, or thirty years, it genuinely feels like part of who you are. But one of the things that drew me to hypnotherapy — and has kept me in this field — is the neuroscience that sits behind it. Because the brain doesn’t work the way most people think it does.

In this article, I want to explain the concept of neuroplasticity, what the research shows about how hypnosis affects the brain, and — most importantly — what this means practically for people who feel stuck in patterns they can’t seem to change.

What Neuroplasticity Actually Means

For most of the twentieth century, the prevailing view in neuroscience was that the adult brain was essentially fixed. You were born with a certain number of neurons, and the connections between them were more or less set by early adulthood. Change was considered limited.

We now know this was wrong. The brain remains plastic — capable of forming new connections, strengthening existing ones, and weakening pathways that are no longer used — throughout life. This is neuroplasticity, and it has profound implications for anyone working with mental health, behaviour change, or chronic conditions.

The phrase “neurons that fire together wire together” captures the mechanism. Every time you think a thought, feel an emotion, or repeat a behaviour, the neural pathway associated with it is reinforced. Anxiety, avoidance, negative self-talk, chronic pain responses — these are all, at a neurological level, well-worn pathways. Heavily used roads in the brain’s network.

The implication is significant: those roads can be redirected. Not instantly, and not without the right conditions — but genuinely and durably. This is not positive thinking. It is biology.

Why Hypnotherapy Creates Ideal Conditions for Neural Change

Neuroplasticity is always happening to some degree — the brain is constantly updating. But not all mental states are equally conducive to deep, lasting change. This is where hypnotherapy has something specific to offer.

During hypnosis, the brain shifts from the fast beta waves associated with active, analytical thinking into slower alpha and theta waves — states associated with deep relaxation, heightened focus, and increased receptivity. Research by Gruzelier (2002) demonstrated these brainwave shifts clearly, and subsequent neuroimaging studies have mapped what else changes.

Several findings are particularly relevant to understanding why hypnotherapy works:

The default mode network quietens

The default mode network (DMN) is the brain system associated with self-referential thinking — the mental chatter, rumination, and self-criticism that occupies so much of our waking mental life. Research by McGeown et al. (2009) showed that DMN activity reduces significantly during hypnosis. For clients whose patterns are maintained by relentless overthinking, this reduction creates a window that is genuinely difficult to access through conscious effort alone.

The prefrontal cortex and insula communicate more effectively

fMRI studies (Hoeft et al., 2012) have shown that hypnosis enhances connectivity between the prefrontal cortex — responsible for executive function, decision-making, and self-regulation — and the insula, which processes bodily awareness and emotional experience. In practical terms, this means clients in hypnosis have better access to the parts of the brain needed to regulate their responses and integrate new patterns.

Pain and discomfort signals are processed differently

Research by Rainville et al. (1997) and Jensen et al. (2006) demonstrated that hypnosis changes activity in the somatosensory cortex and anterior cingulate cortex — areas involved in processing pain and physical discomfort. This is why gut-directed hypnotherapy is effective for IBS, and why hypnotherapy has a genuine evidence base for chronic pain management. The brain’s interpretation of those signals genuinely changes.

What This Looks Like in Practice: Three Areas I Work With Regularly

Understanding the neuroscience is useful, but what matters to most of my clients is what it means for their actual lives. Here are three areas where I see the neuroplasticity mechanism at work most clearly.

Anxiety and habitual fear responses

Anxiety is, neurologically, a well-practised prediction. The brain has learned — through repetition, often originating in earlier experiences — to anticipate threat in certain situations. The amygdala fires, cortisol rises, and the body responds before the conscious mind has even processed what’s happening.

In hypnotherapy, we access the subconscious where that prediction is stored and begin to update it. Through guided visualisation and suggestion in the hypnotic state, the brain rehearses a different response — calm, regulated, in control. With repetition across sessions, this rehearsal begins to compete with and eventually replace the old automatic response. Clients often describe it as the anxiety still being technically present, but losing its grip.

Chronic pain and gut symptoms

Pain is not simply a signal from a damaged area of the body. It is the brain’s interpretation of signals — and that interpretation can be modified. For clients with chronic pain conditions or IBS, the brain has often become hypersensitive, amplifying signals that would not register as painful in a non-sensitised nervous system.

Gut-directed hypnotherapy — developed originally by Professor Peter Whorwell and now supported by substantial clinical evidence — works precisely through this mechanism. By calming the gut-brain axis and reducing the brain’s amplification of gut signals, symptoms frequently reduce significantly. NICE guidelines now recognise gut-directed hypnotherapy as a valid treatment option for IBS.

Deeply held limiting beliefs

Beliefs about worthiness, capability, safety, and identity are among the most entrenched neural patterns people carry. They form early, they’re reinforced constantly, and they operate automatically — which is why intellectual insight alone rarely changes them. Understanding that you’re not ‘actually’ worthless doesn’t stop you feeling that way when it matters.

Hypnotherapy addresses this by working at the level where the belief actually lives — the subconscious. The reduced DMN activity and increased receptivity of the hypnotic state allow new, more accurate beliefs to be installed without hitting the wall of conscious resistance. Over sessions, clients begin to notice the old belief losing its automatic authority.

An Important Clarification: What Hypnotherapy Is Not

The neuroscience can make hypnotherapy sound almost magical, so I want to be clear about what it is and isn’t.

It is not a passive process where change is done to you while you’re unconscious. You remain aware throughout every session. It is a collaborative process — I create the conditions, guide the process, and apply the therapeutic techniques, but the change happens because your brain does the work. My clients are active participants, not passengers.

It is also not a single-session fix for deep-rooted patterns. Neuroplasticity works through repetition. New pathways need to be reinforced. This is why I provide personalised audio recordings for clients to use between sessions, and why I recommend a realistic course of treatment rather than promising transformation in one sitting.

Frequently Asked Questions

Can the brain really change at my age?

Yes. Neuroplasticity continues throughout life, though the rate of change can vary. Some of the most meaningful shifts I’ve seen in practice have been with clients in their 50s and 60s. The brain’s capacity for change doesn’t disappear with age — it may require more repetition, but it remains.

How is this different from CBT?

CBT works at the level of conscious thought patterns and is highly effective for many people. Hypnotherapy goes deeper, working with the subconscious patterns that often drive conscious thoughts in the first place. The two approaches are complementary — I work with a number of clients who are also seeing CBT therapists, and the combination can be very powerful.

How many sessions does neural change require?

It depends on the depth and age of the pattern. For anxiety and stress, clients typically notice meaningful change within 3 to 5 sessions. For more deeply embedded beliefs or longer-standing conditions, 6 to 8 sessions is more realistic. I always give an honest assessment after the initial consultation.

Do the changes last?

When the work is done properly, and the new patterns are reinforced through practice between sessions, yes — the changes are durable. The neural pathway has genuinely been modified, not just temporarily suppressed. That said, life is ongoing, and some clients return for a session or two during particularly challenging periods, which I think of as maintenance rather than starting over.

Ready to Explore What’s Possible?

If you’ve read this far, you’re probably someone who wants to understand how things work before committing to them. I respect that. The science behind hypnotherapy and neuroplasticity is genuinely robust — and my experience working with clients in London over the years has only strengthened my confidence in what this approach can do.

If you’d like to talk through your specific situation and whether hypnotherapy is a good fit, I offer a free initial phone consultation. There’s no obligation, and I’ll always tell you honestly if I think something else would serve you better.

My practice is at 364 City Road, London EC1V 2PY. I also work online with clients across the UK. Call 020 7101 3284 or book via the link below.

→ Book your free consultation

About the Author

Antonios Koletsas is a clinical hypnotherapist based in London, registered with the General Hypnotherapy Standards Council (GHSC) and the General Hypnotherapy Register (GHR). He specialises in anxiety, stress, chronic pain, IBS, and confidence work, seeing clients in person at his City Road practice and online across the UK.

References

Doidge, N. (2007). The Brain That Changes Itself. Penguin.

Montgomery, G. H., et al. (2000). “The effectiveness of hypnosis as an adjunct to cognitive-behavioral therapy for pain.” Journal of Consulting and Clinical Psychology, 68(1), 16–25. https://doi.org/10.1037/0022-006X.68.1.16

Whorwell, P. J., Prior, A., & Faragher, E. B. (1984). “Controlled trial of hypnotherapy in the treatment of severe refractory irritable-bowel syndrome.” Gastroenterology, 86(6), 1662–1667. https://doi.org/10.1016/0016-5085(84)90013-9

Miller, V., & Whorwell, P. J. (2008). “Hypnotherapy for functional gastrointestinal disorders: A review.” International Journal of Clinical and Experimental Hypnosis, 56(3), 279–292. https://doi.org/10.1080/00207140802070908

Hammond, D. C. (2010). “Hypnosis in the treatment of anxiety and stress-related disorders.” Journal of Bodywork and Movement Therapies, 14(2), 134–140. https://doi.org/10.1016/j.jbmt.2009.10.006

Jensen, M. P., et al. (2006). “Hypnosis for chronic pain management: A new hope.” Pain, 123(1-2), 195–196. https://doi.org/10.1016/j.pain.2006.06.019

Alladin, A., & Alibhai, A. (2007). “Cognitive hypnotherapy for depression: An empirical investigation.” International Journal of Clinical and Experimental Hypnosis, 55(2), 147–166. https://doi.org/10.1080/00207140601177939