Is Hypnotherapy Evidence-Based?

If you’re asking this, you’ve probably got a picture in your head of stage shows, swinging watches and something vaguely mystical – and you’re wondering whether any of this belongs in the same sentence as “evidence”.

Fair enough. It’s exactly the question I’d ask.

So this page isn’t a sales pitch. It’s an honest account of what the research shows, what it doesn’t, and where the gaps are. Including the parts that don’t flatter the profession – because a page about evidence that only presents the good news isn’t really about evidence.

The short answer

Yes – for certain applications, and particularly in combination with cognitive behavioural therapy.

Hypnosis has been studied in randomised controlled trials for decades. A 2024 umbrella review in Frontiers in Psychology examined twenty years of meta-analytic research and found consistent evidence of efficacy across a range of conditions, with anxiety among the better-supported areas.¹ More importantly for how I work: meta-analyses have repeatedly shown that adding hypnosis to cognitive behavioural therapy makes it measurably more effective than CBT alone.²

What the evidence does not support is equally important, and it has its own section below.

What “evidence-based” actually means

Worth thirty seconds, because the phrase gets used loosely.

Evidence-based doesn’t mean “practitioners say it works” or “there are testimonials”. It means the method has been tested in controlled trials – ideally randomised, with comparison groups – using measurable outcomes, and that those trials have been pooled and analysed systematically.

The strength of evidence runs roughly like this: a single study is a data point. A meta-analysis pools many studies and is considerably more reliable. An umbrella review reviews the meta-analyses – the strongest form of synthesis available. For hypnosis, all three levels exist.

That also means we can distinguish between well supported, promising, and not supported – which is what the rest of this page does.

Where the evidence is strong

Anxiety. One of the best-supported applications. Meta-analytic work has consistently found hypnosis to produce substantial effects on anxiety symptoms, and the 2024 umbrella review confirms this across two decades of data.¹ A British Medical Journal clinical review found good evidence from randomised controlled trials that hypnosis reduces anxiety, with particularly strong results for situational anxiety and panic.³ (More: hypnotherapy for anxiety)

Public speaking anxiety specifically. Schoenberger and colleagues (1997) compared CBT with and without hypnosis for fear of public speaking. Both groups improved more than a waiting-list control – but adding the hypnotic component enhanced the treatment’s effectiveness.⁴ (More: public speaking anxiety)

Pain. Historically the most thoroughly researched area in hypnosis. A large review of over a hundred studies on chronic pain management found hypnotherapy substantially more effective than CBT alone, with both outperforming relaxation techniques.⁵

Irritable bowel syndrome. Notable because the outcomes are objective rather than self-reported mood. NICE – the body that sets evidence-based treatment guidance for the UK’s National Health Service – has recognised hypnotherapy as an evidence-based intervention for IBS.⁶

Depression, in combination with CBT. Alladin and Alibhai (2007) randomly assigned 84 people with depression to either cognitive hypnotherapy or standard cognitive behavioural therapy for sixteen weeks. Both groups improved – but the hypnosis group showed significantly larger reductions in depression, anxiety and hopelessness, and the advantage held at both six- and twelve-month follow-up.⁷

Post-traumatic stress. Bryant and colleagues (2005) compared CBT, CBT plus hypnosis, and supportive counselling in 87 trauma survivors with acute stress disorder. Both CBT conditions outperformed counselling – and the hypnosis condition produced greater reduction in re-experiencing symptoms than CBT alone.⁸

The strongest finding: hypnosis amplifies CBT

This is the one that matters most for how I work, so it gets its own section.

In 1995, Kirsch, Montgomery and Sapirstein published a meta-analysis in the Journal of Consulting and Clinical Psychology pooling 18 studies with 577 participants, all comparing cognitive behavioural therapy with and without hypnosis across a range of conditions.²

The result: a mean effect size of 0.52 standard deviations in favour of adding hypnosis. In plain terms – the average client receiving cognitive behavioural hypnotherapy improved more than 70% of clients who received the identical treatment without hypnosis.²

The authors described that as a conservative estimate. Under less stringent analysis, the figure rises further. Subsequent reviews found the same additive effect, and Kirsch’s later work noted that the enhancement was especially pronounced for anxiety – and that for some conditions the advantage grew over time rather than fading.²

This is the empirical foundation of cognitive behavioural hypnotherapy. Not “hypnosis is magic”, but something more modest and more useful: take the best-researched psychological framework there is, add hypnosis, and it works better.

Two further markers worth knowing:

In 1997, the American Psychological Association formally classified CBT plus hypnosis as an empirically supported treatment – a shortlist judged by deliberately stringent criteria.⁹

And CBT is the one psychological therapy recommended across the board in the UK’s NICE guidelines – for depression and for all the anxiety disorders – which is precisely the framework this approach builds on.¹⁰

Where the evidence is thin – and what I won’t claim

Now the part most practitioners leave out.

Hypnotherapy does not cure physical disease. It can help with how you experience symptoms, with pain, with stress-linked conditions. It is not a treatment for the underlying pathology of any illness, and it is never a substitute for medical care.

Recovered memories. Hypnosis should not be used to “retrieve” forgotten memories. Memory is reconstructive, hypnosis increases suggestibility, and the combination can generate vivid recollections of things that never happened. This is one of the genuinely justified criticisms of the field, and any practitioner offering memory retrieval is operating against the evidence.

Not everything is equally well studied. Hypnotherapy is advertised for a vast range of conditions. The research base for anxiety, pain and IBS is substantially stronger than for many of the other things on those lists. Where a claim isn’t supported, it shouldn’t be made.

The research has methodological limits. Blinding is inherently difficult – you can’t give someone placebo hypnosis without them noticing. Some studies have small samples. Some influential early findings come from dissertations rather than peer-reviewed journals. Some frequently cited guidance is now over two decades old. None of this invalidates the overall picture, but it means “evidence-based” should be stated with appropriate precision rather than as a slogan.

And there are no miracles in one session. This is structured, goal-oriented work that takes several sessions and your active participation.

If someone tells you hypnosis works for everything, they’re selling. Knowing the limits is part of practising responsibly.

“But isn’t it just suggestion and placebo?”

The most common objection, and it deserves a straight answer rather than a defensive one.

Partly, yes – and that’s the point, not the problem. Suggestion is the mechanism. Hypnosis works by using focused attention and suggestion to change automatic patterns of thought and response. That’s not a flaw in the method; it’s a description of it. CBT also works by changing thought patterns – hypnosis adds a state in which that change takes hold more readily.

What makes it more than generic placebo is the comparative data. In the studies above, both groups received psychological treatment, both expected to improve, both had a credible rationale – and the hypnosis groups still did better.^{24 78} Expectation is part of how it works, but it isn’t the whole story.

It’s also worth noting: hypnotic responsiveness varies between people, measurably and consistently. Some people enter the state readily, others need more practice. That variability is itself a sign of a real phenomenon being measured, not a universal placebo effect.

Why cognitive behavioural hypnotherapy is the strongest version

I don’t practise “hypnosis”. I practise cognitive behavioural hypnotherapy – and the distinction is exactly what this page has been about.

CBT provides the structure and the model of change: identify the automatic thoughts and beliefs driving the problem, change them, retrain the behaviour. Decades of research make it the most thoroughly validated psychological framework available.

Hypnosis provides the access and the amplifier: a state in which those changes reach the automatic level where the problem actually runs.

There’s also a client-side finding worth mentioning. When researchers showed people videos of different therapy styles, the cognitive behavioural approach was preferred over the alternatives on every measure – credibility, personal preference and session quality.¹¹ Collaborative, transparent, explanatory work appeals to people. It also means you understand what we’re doing and why, which is not incidental to whether it works.

(More: hypnotherapy vs CBT · what happens in a session)

What this means for you

Three practical takeaways.

You don’t have to believe in it. Expectation helps, but scepticism isn’t an obstacle. What matters is participation – this is active work, not something performed on you while you lie there.

Expect structure, not magic. Several sessions, clear goals, measurable progress. (More: how many sessions do you need?)

Ask your practitioner this question. Whoever you end up working with, ask what the evidence is for your particular issue – and be wary of anyone who answers without caveats.

FAQ

Is hypnotherapy scientifically proven?

“Proven” isn’t really a scientific word – but yes, it’s well supported for specific applications, particularly anxiety, pain and IBS, and particularly when combined with CBT.^{1 2}

Is hypnotherapy recognised by medical and professional bodies?

Yes, in defined areas. NICE recognises hypnotherapy as an evidence-based intervention for irritable bowel syndrome,⁶ and the American Psychological Association has classified CBT combined with hypnosis as an empirically supported treatment.⁹

Does it work for everyone?

No. Hypnotic responsiveness varies between individuals, and willingness to engage matters more than most people assume. For the focused, relaxed state used in therapeutic work, nearly everyone can reach a useful level – but outcomes differ.

Is this the same as stage hypnosis?

No. Stage hypnosis selects highly responsive volunteers for entertainment. Clinical hypnosis uses focused attention to work on goals you’ve chosen, while you remain awake and in control throughout. (More: can you be hypnotised against your will?)

Can hypnotherapy do harm?

The adverse effect profile is low. The real risks lie in unqualified practice – particularly memory work, and practitioners treating conditions that need medical care. Training matters.

Does online hypnotherapy have the same evidence base?

Broadly yes, though direct online-versus-in-person trials are still scarce. I’ve addressed that honestly here: online hypnotherapy.

Scepticism is a perfectly good starting point

I’d genuinely rather work with a sceptical client who participates than a believer who waits for magic. Curiosity is enough.

I offer a limited number of sessions per week, and they have no fee – instead, you donate what you can to people who need it. Here’s why.

Limited weekly slots available.

Sources

1. Rosendahl, J., Alldredge, C. T. & Haddenhorst, A. (2024): Meta-analytic evidence on the efficacy of hypnosis for mental and somatic health issues: a 20-year perspective. Frontiers in Psychology, 14:1330238. pmc.ncbi.nlm.nih.gov/articles/PMC10807512
2. Kirsch, I., Montgomery, G. & Sapirstein, G. (1995): Hypnosis as an adjunct to cognitive-behavioral psychotherapy: A meta-analysis. Journal of Consulting and Clinical Psychology, 63(2), 214–220.
3. Vickers, A. & Zollman, C. (1999): Clinical Review: Hypnosis and relaxation therapies. British Medical Journal, 319, 1346–1349.
4. Schoenberger, N. E., Kirsch, I., Gearan, P., Montgomery, G. & Pastyrnak, S. L. (1997): Hypnotic enhancement of a cognitive behavioral treatment for public speaking anxiety. Behavior Therapy, 28, 127–140.
5. Malone, M. & Strube, M. (1988): Meta-analysis of non-medical treatment for chronic pain. Pain, 34, 231–234.
6. National Institute for Health and Care Excellence (NICE): Guidance on irritable bowel syndrome in adults (CG61, 2008, updated).
7. Alladin, A. & Alibhai, A. (2007): Cognitive hypnotherapy for depression: An empirical investigation. International Journal of Clinical and Experimental Hypnosis, 55(2), 147–166.
8. Bryant, R. A., Moulds, M. L., Guthrie, R. M. & Nixon, R. D. V. (2005): The additive benefit of hypnosis and cognitive-behavioral therapy in treating acute stress disorder. Journal of Consulting and Clinical Psychology, 73(2), 334–340.
9. American Psychological Association, Task Force on Psychological Interventions: classification of CBT plus hypnosis as an empirically supported treatment (1997).
10. National Institute for Health and Care Excellence (NICE): Guidelines on generalised anxiety disorder and panic disorder (CG113), depression in adults (NG222) and irritable bowel syndrome (CG61).
11. Wanigaratne, S. & Barker, C. (1995): Clients’ preferences for styles of therapy. British Journal of Clinical Psychology, 34(2), 215–222.
12. See sources 1, 2, 3 and 6.