What science says about hypnotherapy
Hypnosis is not a stage act and it is not magic. It is a psychological method with a research base behind it: a state of focused attention in which a person responds more readily to imagery and suggestion. That is how the American Psychological Association defines it (APA Division 30 — the Society of Psychological Hypnosis). Below is an honest map of the evidence: where the data is strong, where it is modest, and where there is not yet enough to go on. I would rather you chose the method with your eyes open.
Where the data is strong
Pain: one of the larger systematic reviews, covering 85 controlled experimental trials with laboratory-induced pain (Thompson and colleagues, 2019, Neuroscience & Biobehavioral Reviews), found that hypnosis consistently reduced the sensation of pain — most of all in people with medium and high hypnotisability[1]. Clinical studies of procedural and chronic pain also show that hypnosis is beneficial as an addition to medical care[2].
Gut and stress (IBS): “gut-directed hypnotherapy” is one of the better-researched protocols: a series of randomised trials shows a moderate reduction in the symptoms of irritable bowel syndrome[2], and the British NICE clinical guideline lists it as an option when the usual measures have not worked[3]. It is a clear example of how working with the mind can change how the body feels.
Anxiety before procedures: before surgery, dental treatment or medical examinations, brief hypnotic techniques reduce anxiety and the need for sedative medication — this has been shown in dozens of clinical studies[2] and summarised in several meta-analyses. Along with pain, this is where hypnosis has been studied more thoroughly than anywhere else.
Where the data is more modest
Sleep: the research is encouraging — hypnosis-based techniques can improve how quickly people fall asleep and how well they sleep, but there are still few large, rigorous trials[2].
General stress, self-esteem, confidence: in my practice this goes hand in hand with talking work. There are few large studies on it specifically[2], so I don’t promise a “result” here — what I promise is honest work together, with progress checked along the way.
Depression: only alongside the main treatment you are receiving, and in agreement with your doctor, if you have one. Hypnosis is not a stand-alone method for depression — direct reviews are few, and I am cautious here[2].
Where science honestly says: not enough
Stopping smoking: the Cochrane review (Barnes and colleagues, 2019) says it plainly: there is not enough evidence that hypnosis works better than other ways of giving up[4]. I don’t sell “one session and you’ll stop” — if someone promises you that, it is marketing.
Weight loss: there are few studies, but there are signs that, combined with work on habits, hypnosis strengthens the effect of that work, especially over the longer term[2]. It can support a change in habits but not replace it.
That is where the main principle of my work comes from: hypnotherapy is a tool, not a magic button. We use it where there is a case for it, combine it with talking work and always check the result against your everyday life. Hypnotherapy does not replace a doctor’s care or the treatment they have prescribed.
A separate note on memory: hypnosis increases confidence in memories, but not their accuracy. That is why I don’t take requests for “recovered” memories.
Hypnotherapy is a method with an uneven map of evidence: in some places the data is strong, in others it is not enough[2], and an honest specialist says so before the work begins. When we meet, we discuss whether the method suits what you want to work on — and if it does not, I will tell you straight.
Sources reviewed in September 2026. The definition of the method is from the American Psychological Association (APA, Division 30).
