WHAT DOES SCIENCE ACTUALLY SAY ABOUT HYPNOSIS

Five things the research supports—and five claims we should be more careful making.

By Hypnosis World Research Desk

HYPNOSIS WORLD MAGAZINE  •  FOUNDING ISSUE #001

Five things the research supports—and five claims we should be more careful making.

by Hypnosis World Research Desk

HYPNOSIS WORLD MAGAZINE  •  FOUNDING ISSUE #001  •  SEPTEMBER 29, 2026

WHAT DOES SCIENCE ACTUALLY SAY ABOUT HYPNOSIS

Hypnosis has an unusual problem.

Depending on whom you ask, you’ll hear one of two stories.

One side says hypnosis is little more than imagination, relaxation, or theatrical suggestion.

The other side sometimes talks about hypnosis as though virtually anything can be accomplished if you just access the subconscious mind correctly.

THE SCIENCE IS MORE INTERESTING THAN EITHER EXTREME.

There is a substantial body of hypnosis research.

There are randomized controlled trials.

Systematic reviews.

Meta-analyses.

Brain-imaging studies.

Research into pain, medical procedures, anxiety, hypnotic suggestibility, cognition, perception, and other areas.

A broad review published in 2024 examined 49 meta-analyses containing 261 distinct primary studies. The most robust evidence was found in hypnosis used with medical procedures and pain, although the authors also emphasized substantial differences in study quality and outcomes.

So hypnosis deserves to be taken seriously.

But taking hypnosis seriously also means taking the limitations of the evidence seriously.

That’s exactly what Research Desk is going to do.

We’re not interested in proving hypnosis works.

We’re interested in a better question:

WHAT DOES THE EVIDENCE ACTUALLY TELL US?

Let’s start with five things we have reasonable scientific support for—and five claims that deserve more caution.

1. YES: HYPNOSIS CAN INFLUENCE PAIN

This is one of the strongest areas of hypnosis research.

Multiple reviews and meta-analyses have reported reductions in pain associated with hypnotic interventions.

A comprehensive meta-analysis of clinical pain studies reported medium-sized overall effects, although outcomes varied according to factors including study quality and hypnotic suggestibility.

A 2024 systematic review and meta-analysis examined 70 studies involving 6,078 participants where hypnosis was used alongside another intervention. It found small additional analgesic effects in several contexts, while also rating the overall certainty of evidence as very low.

Another recent meta-analysis of hypnosis during invasive medical procedures found reductions in both pain and anxiety compared with standard care.

WHAT THAT MEANS

There is legitimate evidence that hypnotic interventions can affect pain experience.

WHAT IT DOESN’T MEAN

It doesn’t mean:

“Hypnosis eliminates pain.”

It doesn’t mean everyone responds equally.

And it certainly doesn’t mean a hypnotist should tell someone to abandon appropriate medical care.

Evidence that hypnosis can influence pain is not evidence that hypnosis cures every condition causing pain.

Those are two completely different claims.

2. YES: HYPNOSIS CAN BE USEFUL AROUND MEDICAL PROCEDURES

This is another area where the research becomes particularly interesting.

A large systematic review and meta-analysis examining hypnosis in anesthesia-related settings identified 142 studies involving more than 9,000 patients.

The review found evidence suggesting hypnosis may help reduce anxiety, reduce some pain outcomes, and lower postoperative nausea and vomiting in certain circumstances.

But the authors also made something very clear:

For many outcomes, the impact remains unknown.

An earlier meta-analysis involving 50 studies and 4,269 surgical patients reported positive effects across outcomes including distress, pain, medication consumption, recovery, and procedure time, while cautioning that substantial heterogeneity limited how broadly the findings could be generalized.

WHAT THAT MEANS

Hypnosis may be a useful adjunct in some medical and procedural environments.

That’s significant.

WHAT IT DOESN’T MEAN

It doesn’t turn a hypnotist into a physician.

It doesn’t replace anesthesia simply because hypnotic analgesia is possible.

And evidence from a specific medical setting shouldn’t automatically be generalized to every other medical condition.

3. YES: HYPNOSIS IS ASSOCIATED WITH MEASURABLE
CHANGES IN BRAIN ACTIVITY

.

This is where things become fascinating.

Modern researchers can examine hypnosis using technologies including EEG and functional brain imaging.

A systematic review examining functional brain activity during hypnosis found evidence of measurable functional changes, although the included studies were highly heterogeneous.

A later review examining hypnosis and hypnotizability also described findings involving functional connectivity, executive-control networks, EEG activity, and differences associated with hypnotic responsiveness.

In other words:

Something measurable is happening.

But this is where we need to be careful.

A BRAIN SCAN IS NOT A COMPLETE THEORY OF HYPNOSIS.

Seeing brain activity associated with an experience doesn’t automatically tell us exactly what hypnosis is.

Researchers continue to debate mechanisms and theoretical explanations.

That’s healthy.

Science is supposed to do that.

We can see something happening in the brain" and "we completely understand hypnosis" are not the same statement.

4. YES: PEOPLE DIFFER IN
HYPNOTIC RESPONSIVENESS

If you’ve worked with enough people, this probably won’t surprise you.

People respond differently.

Some individuals demonstrate striking responses to hypnotic suggestions.

Others respond moderately.

Some respond relatively little to particular suggestions or testing procedures.

Research has repeatedly examined these differences under concepts such as hypnotizability or hypnotic suggestibility.

And those differences can matter.

For example, a large experimental pain meta-analysis found that analgesic effects varied substantially with hypnotic suggestibility, with larger responses among highly and moderately suggestible participants than among low-suggestible participants.

WHAT THAT MEANS

We shouldn’t assume every person will respond identically to the same suggestion, technique, script, or procedure.

That makes practitioner adaptability important.

WHAT IT DOESN’T MEAN

A score on a suggestibility measure necessarily tells you everything a particular person can accomplish in every hypnotic context.

Human beings are more complicated than that.

5. YES: EXPECTATION, ATTENTION,
SUGGESTION, AND CONTEXT MATTER

Hypnosis doesn’t occur in a vacuum.

Words matter.

Expectations matter.

Attention matters.

Context matters.

The relationship between practitioner and participant matters.

How suggestions are structured matters.

What the person expects to happen can matter.

What they pay attention to can matter.

And different suggestions can produce different responses.

That’s one reason hypnosis is so interesting.

It sits at the intersection of attention, perception, expectation, cognition, suggestion, experience, and behavior.

But this creates another important scientific question:

When hypnosis produces a result, which components are responsible for how much of that result?

That’s not always easy to answer.

And it leads us directly into the claims we should be more careful making.

NOW FOR THE OTHER SIDE.
FIVE CLAIMS WE SHOULD BE MORE CAREFUL MAKING.

Being enthusiastic about hypnosis doesn’t require us to defend every claim ever made about it.

In fact, credibility requires the opposite.

When evidence is strong, say so.

When evidence is mixed, say so.

When we don’t know, say:

WE DON’T KNOW.

That’s not weakness.

That’s intellectual honesty.

1.BE CAREFUL: "HYPNOSIS WORKS FOR EVERYONE."

That’s too broad.

People differ in hypnotic responsiveness.

Conditions differ.

Interventions differ.

Practitioners differ.

Outcomes differ.

Studies differ.

Even within areas where hypnosis has demonstrated benefits, not every participant benefits equally.

The better claim is:

People vary in their response to hypnosis, and outcomes depend on the person, the goal, the intervention, the context, and other factors.

Less exciting?

Maybe.

More defensible?

Absolutely.

2. BE CAREFUL: "HYPNOSIS CAN CURE ______."

This is where enthusiasm can become dangerous.

There is an enormous difference between evidence that hypnosis can help with a symptom or outcome and evidence that hypnosis cures the underlying disease.

Pain is the obvious example.

Hypnosis may influence a person’s experience of pain.

That does not mean hypnosis eliminated whatever medical condition produced the pain.

The distinction matters.

A lot.

And practitioners working around medical or mental-health issues need to stay inside their training, legal scope, and competence.

Changing someone's experience of a symptom is not automatically the same as curing its cause.

3. BE CAREFUL: "SCIENCE HAS PROVEN EXACTLY HOW HYPNOSIS WORKS."

No!

Researchers have proposed multiple theories of hypnosis and continue investigating its mechanisms.

Brain imaging has provided fascinating evidence.

Experimental psychology has provided fascinating evidence.

Research into suggestion, agency, attention, expectation, cognition, and hypnotizability has provided fascinating evidence.

But there isn’t one universally accepted explanation that closes the book.

And that’s okay.

WE DON’T NEED A FINAL THEORY TO STUDY EFFECTS.

Medicine used effective interventions long before every mechanism involved was completely understood.

Research continues.

Our understanding evolves.

That’s how science works.

4. BE CAREFUL: "HYPNOSIS IS BETTER THAN CONVENTIONAL TREATMENT."

Sometimes studies find hypnosis beneficial.

Sometimes hypnosis is studied in addition to standard treatment.

Sometimes it’s compared with another intervention.

Sometimes the evidence is weak.

Sometimes results conflict.

For example, recent pain reviews do not all reach identical conclusions about different kinds of pain or different treatment contexts. One 2025 meta-analysis reported significant effects for acute pain but not chronic pain, while other reviews have reported benefits in some chronic-pain populations.

That’s exactly why sweeping statements are a problem.

 

The correct question isn’t:

“Is hypnosis better than medicine?”

That’s almost meaningless.

 

The better questions are:

For what condition?

Which outcome?

Compared with what?

Delivered how?

To whom?

With what quality of evidence?

 

Now we’re talking science.

5. BE CAREFUL: "THERE'S A STUDY THAT PROVES IT."

This may be the biggest lesson in this entire article.

One study is not “science.”

A study can have:

A tiny sample.

Poor controls.

Weak methodology.

Selection bias.

Measurement problems.

Statistical problems.

Results that nobody can replicate.

Or findings that are technically statistically significant but practically unimportant.

That’s why Research Desk will frequently focus on systematic reviews and meta-analyses, while still examining important individual studies when appropriate.

We want to know:

WHAT DOES THE TOTALITY OF THE EVIDENCE SUGGEST?

Not:

CAN WE FIND ONE PAPER THAT AGREES WITH US?

There’s a huge difference.

"Hypnosis doesn't become weaker when we question exaggerated claims. It becomes stronger._

WHY THIS MATTERS TO WORKING HYPNOTISTS

You might be thinking:

“I’m a practitioner. I’m not a researcher. Why do I need to care about all this?”

Because credibility matters.

Your clients can search the internet.

Physicians can search the literature.

Journalists can check your claims.

Potential referral partners can check your claims.

And increasingly, AI can surface research almost instantly.

The days when someone could make an extraordinary scientific claim in a seminar and expect nobody in the room to check it are disappearing.

THAT IS GOOD FOR HYPNOSIS

Good practitioners have nothing to fear from better evidence.

If something we do works, let’s investigate it.

If it works only under certain circumstances, let’s understand those circumstances.

If something we’ve taught for thirty years turns out to be wrong, let’s stop teaching it.

If a claim is unsupported, let’s stop repeating it simply because it sounds impressive.

And when research gives us stronger evidence for something hypnosis can genuinely accomplish—

LET’S TALK ABOUT IT

Loudly.

Credibly.

And accurately.

WHAT DOES THIS MEAN TO A WORKING HYPNOTIST?

We’re not here to make hypnosis look good.

We’re not here to make hypnosis look bad.

WE’RE HERE TO GET IT RIGHT.

Because hypnosis doesn’t need exaggerated claims to be fascinating

Hypnosis doesn't become weaker when we question exaggerated claims. It becomes stronger.

RESEARCH DESK
What does the evidence actually say?

Notes

  1. Jenny Rosendahl, Cameron T. Alldredge, and Antonia Haddenhorst, “Meta-Analytic Evidence on the Efficacy of Hypnosis for Mental and Somatic Health Issues: A 20-Year Perspective,” Frontiers in Psychology 14 (2024): article 1330238, https://doi.org/10.3389/fpsyg.2023.1330238. PubMed

  2. Hannah G. Jones et al., “Adjunctive Use of Hypnosis for Clinical Pain: A Systematic Review and Meta-Analysis,” Pain Reports 9, no. 5 (2024): e1185, https://doi.org/10.1097/PR9.0000000000001185. kclpure.kcl.ac.uk

  3. Marie José Lahoud, Samuel Tell Gurary, and Nadia Elia, “Hypnosis for Anaesthetists: A Systematic Review and Meta-Analyses,” Anaesthesia 81, no. 1 (2026): 103–15, https://doi.org/10.1111/anae.70013. Wiley Online Library

  4. Thomas Gerhard Wolf et al., “Functional Changes in Brain Activity Using Hypnosis: A Systematic Review,” Brain Sciences 12, no. 1 (2022): article 108, https://doi.org/10.3390/brainsci12010108. PubMed

  5. Trevor Thompson et al., “The Effectiveness of Hypnosis for Pain Relief: A Systematic Review and Meta-Analysis of 85 Controlled Experimental Trials,” Neuroscience & Biobehavioral Reviews 99 (2019): 298–310, https://doi.org/10.1016/j.neubiorev.2019.02.013. PMC

Bibliography

Jones, Hannah G., Rodrigo R. N. Rizzo, Brian W. Pulling, et al. “Adjunctive Use of Hypnosis for Clinical Pain: A Systematic Review and Meta-Analysis.” Pain Reports 9, no. 5 (2024): e1185. https://doi.org/10.1097/PR9.0000000000001185. kclpure.kcl.ac.uk

Lahoud, Marie José, Samuel Tell Gurary, and Nadia Elia. “Hypnosis for Anaesthetists: A Systematic Review and Meta-Analyses.” Anaesthesia 81, no. 1 (2026): 103–15. https://doi.org/10.1111/anae.70013. Wiley Online Library

Rosendahl, Jenny, Cameron T. Alldredge, and Antonia Haddenhorst. “Meta-Analytic Evidence on the Efficacy of Hypnosis for Mental and Somatic Health Issues: A 20-Year Perspective.” Frontiers in Psychology 14 (2024): article 1330238. https://doi.org/10.3389/fpsyg.2023.1330238. PubMed

Thompson, Trevor, Devin B. Terhune, Charlotte Oram, et al. “The Effectiveness of Hypnosis for Pain Relief: A Systematic Review and Meta-Analysis of 85 Controlled Experimental Trials.” Neuroscience & Biobehavioral Reviews 99 (2019): 298–310. https://doi.org/10.1016/j.neubiorev.2019.02.013. sciencedirect.com

Wolf, Thomas Gerhard, Karin Anna Faerber, Christian Rummel, Ulrike Halsband, and Guglielmo Campus. “Functional Changes in Brain Activity Using Hypnosis: A Systematic Review.” Brain Sciences 12, no. 1 (2022): article 108. https://doi.org/10.3390/brainsci12010108. PubMed

Place superscript note numbers after the corresponding claims in your article. At the bottom of the webpage, display Notes followed by Bibliography, using hanging indents for the bibliography entries.

 
 
HYPNOSIS WORLD RESEARCH DESK

Research Desk examines hypnosis, psychology, neuroscience, behavior, and related research and translates it into practical language for working practitioners.

Our standard is simple:

FOLLOW THE EVIDENCE.

Even when it confirms what we believe.

Especially when it doesn’t.

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Founding Issue #001 • September 1, 2026

The World of Hypnosis. Delivered Every Tuesday.