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What Is Hypnotherapy?

Hypnotherapy is a therapeutic technique that uses guided hypnosis — a state of focused attention, reduced peripheral awareness, and heightened suggestibility — to help people change behaviors, manage pain, reduce anxiety, and address other psychological or medical concerns. It is practiced by licensed therapists, psychologists, and physicians, and has a growing evidence base for specific applications.

First, What Hypnosis Actually Is (and Isn’t)

Let’s clear away the stage-show nonsense right away. Hypnosis is not mind control. You don’t lose consciousness. You don’t cluck like a chicken unless you already wanted to cluck like a chicken. And nobody is going to make you reveal your darkest secrets while you’re “under.”

What hypnosis actually is: a measurable, reproducible state of consciousness characterized by focused attention, reduced awareness of peripheral stimuli, and increased responsiveness to suggestion. Stanford University researchers using fMRI brain scanning have identified specific neural changes during hypnosis — decreased activity in the dorsal anterior cingulate cortex (the brain’s “salience network,” which helps decide what to pay attention to), increased connectivity between the executive control network and the insula (involved in body awareness), and reduced connectivity between the executive control network and the default mode network (involved in self-reflection).

In plain English: during hypnosis, your brain shifts into a mode where you’re intensely focused, less self-conscious, and more open to new perspectives and suggestions. It’s not a mysterious altered state — it’s a specific configuration of normal brain processes.

About 10-15% of the population is highly hypnotizable, meaning they can experience profound changes in perception, memory, and sensation through hypnotic suggestion. Another 10-15% are highly resistant. The rest of us fall somewhere in between. Hypnotizability appears to be a relatively stable trait — if you’re easily hypnotized at 25, you’ll likely still be easily hypnotized at 65.

A Surprisingly Respectable History

Hypnosis has a colorful and somewhat embarrassing past. Franz Anton Mesmer, an 18th-century Austrian physician, claimed to cure diseases through “animal magnetism” — a supposed invisible fluid that flowed between bodies. Mesmer’s theories were nonsense, but his technique (which involved putting patients into trance-like states) produced real effects. The French Royal Commission, led by Benjamin Franklin and Antoine Lavoisier, investigated Mesmer in 1784 and concluded that the effects were real but caused by imagination, not magnetism. They were basically right.

The Scottish surgeon James Braid coined the term “hypnosis” in the 1840s (from the Greek “hypnos,” meaning sleep — a misnomer, since hypnosis isn’t sleep). Braid recognized that the phenomenon was psychological, not mystical, and began studying it systematically.

Hypnosis gained medical credibility in the mid-19th century when it was used as surgical anesthesia before chemical anesthetics were available. James Esdaile, a Scottish surgeon working in India, performed over 300 operations using hypnotic anesthesia between 1845 and 1851, reporting dramatically lower mortality rates. Once ether and chloroform became available, hypnosis as anesthesia fell out of favor — chemical agents were more reliable and didn’t depend on the patient’s suggestibility.

Sigmund Freud used hypnosis early in his career but eventually abandoned it in favor of free association. This actually set back hypnosis research, because Freud’s enormous influence caused many psychotherapists to dismiss hypnosis as a serious tool. It wasn’t until the mid-20th century that researchers like Milton Erickson, Ernest Hilgard, and Martin Orne revived scientific interest.

How a Hypnotherapy Session Actually Works

A typical hypnotherapy session runs 50 to 90 minutes and follows a fairly standard structure.

Intake and goal-setting. The therapist discusses your history, what you want to address, and what to expect. Good therapists are transparent about what hypnotherapy can and can’t do. This is also when you’d discuss any concerns — and a legitimate therapist will answer them honestly.

Induction. The therapist guides you into a hypnotic state, usually through progressive relaxation, focused breathing, or guided imagery. A common technique involves having you focus on a fixed point, breathe deeply, and progressively relax your muscles from head to toe. The process typically takes 5 to 15 minutes. It’s nothing like the movies — there’s no swinging watch, no “you are getting sleepy” (though some therapists do use eye-fixation techniques).

Deepening. Once you’re in a light trance, the therapist uses additional techniques to deepen the state — counting down, asking you to imagine descending a staircase, or simply allowing time for relaxation to increase. Not everyone reaches the same depth, and that’s fine. Even light hypnosis can be therapeutically useful.

Therapeutic work. This is the core of the session, and it varies dramatically based on the treatment goal. For smoking cessation, the therapist might use direct suggestion (“you find the taste of cigarettes repulsive”) and cognitive restructuring (“you are a non-smoker”). For pain management, the therapist might teach you to alter your perception of pain — imagining it as a dial you can turn down, or as a color that fades. For anxiety, the therapist might guide you through imagined exposure to feared situations while maintaining deep relaxation.

Emergence. The therapist gradually brings you out of the hypnotic state, usually by counting up or suggesting that you’ll feel alert and refreshed. Most people feel relaxed and calm afterward. Some report feeling mildly disoriented for a few minutes.

Many therapists also teach self-hypnosis techniques that clients can practice between sessions. This is actually one of hypnotherapy’s strengths — unlike some therapies that only work in the therapist’s office, self-hypnosis gives you a portable skill.

What the Evidence Actually Shows

The scientific evidence for hypnotherapy is a mixed picture — strong for some applications, weak for others, and absent for many popular claims.

Where Evidence Is Strong

Pain management. This is probably hypnotherapy’s best-supported application. A 2019 meta-analysis published in Neuroscience & Biobehavioral Reviews found that hypnosis produced significant pain reduction across multiple types of pain, including surgical pain, cancer-related pain, and chronic conditions. Some hospitals now offer hypnosis as an adjunct to chemical anesthesia during procedures.

Irritable Bowel Syndrome (IBS). Gut-directed hypnotherapy — developed by Peter Whorwell at the University of Manchester — has shown remarkable results for IBS. Multiple randomized controlled trials have found that 70-80% of patients who complete a course of gut-directed hypnotherapy experience significant symptom improvement, and the benefits persist for years. The National Institute for Health and Care Excellence (NICE) in the UK lists hypnotherapy as a treatment option for IBS when other interventions fail.

Smoking cessation. The evidence here is moderate. Some studies show hypnotherapy is more effective than no treatment and comparable to other cessation methods (nicotine replacement, counseling). A 2019 Cochrane review found insufficient evidence to conclude that hypnotherapy is superior to other active treatments, but individual studies have reported quit rates of 20-30% at 6-month follow-up.

Anxiety and stress reduction. Multiple studies support hypnotherapy for anxiety, including dental anxiety, pre-surgical anxiety, and test anxiety. The effect appears to work through both relaxation and cognitive restructuring — changing how you think about anxiety-provoking situations.

Where Evidence Is Weak or Absent

Weight loss. Despite being one of the most popular reasons people seek hypnotherapy, the evidence for weight loss is thin. Some studies show modest short-term effects, but long-term weight loss from hypnotherapy alone is not well-supported.

Recovered memories. This is where hypnotherapy has caused genuine harm. Hypnosis can create vivid, detailed memories of events that never happened — a phenomenon called confabulation. In the 1980s and 1990s, some therapists used hypnosis to “recover” supposedly repressed memories of childhood abuse, leading to false accusations and destroyed families. The American Psychological Association and the American Medical Association have both issued strong warnings about using hypnosis for memory recovery.

Past-life regression. No scientific evidence supports the claim that hypnosis can access memories from previous lives. The “memories” produced in past-life regression sessions are products of imagination and suggestion, not evidence of reincarnation.

Who Should (and Shouldn’t) Try It

Hypnotherapy is generally safe when practiced by trained, licensed professionals. Side effects are rare and usually mild — occasional headache, drowsiness, or temporary dizziness after a session.

It may be worth considering if you’re dealing with chronic pain, IBS, smoking, or anxiety — especially if conventional treatments haven’t worked well. It’s also sometimes useful as a complement to cognitive-behavioral therapy, not a replacement for it.

It’s not appropriate for everyone. People with certain psychiatric conditions — particularly psychotic disorders like schizophrenia, severe dissociative disorders, or active substance abuse — should generally avoid hypnotherapy or pursue it only under close psychiatric supervision. The altered state of consciousness can potentially worsen some conditions.

The biggest practical challenge is finding a qualified practitioner. Regulation varies enormously — in many jurisdictions, anyone can call themselves a “hypnotherapist” regardless of training. Look for practitioners who hold a license in a recognized health profession (psychology, medicine, social work, counseling) and have specific training in clinical hypnosis. Organizations like the American Society of Clinical Hypnosis and the Society for Clinical and Experimental Hypnosis maintain directories of qualified practitioners.

The Honest Assessment

Hypnotherapy sits in an awkward spot between mainstream medicine and alternative therapy. It has real mechanisms, real evidence for specific conditions, and growing acceptance in academic medicine. But it also attracts charlatans, makes claims that outrun its evidence, and carries historical baggage from both stage entertainment and the recovered memory debacle.

The smartest approach is the same one that applies to any therapeutic intervention: look at the evidence for your specific condition, find a qualified practitioner, set realistic expectations, and be skeptical of anyone who promises miraculous results. Hypnotherapy won’t fix everything, but for the right person with the right problem, it can be a genuinely useful tool.

Frequently Asked Questions

Can you be hypnotized against your will?

No. Hypnosis requires the participant's cooperation and willingness. You cannot be hypnotized into doing something you fundamentally object to. Stage hypnosis shows create the illusion of control, but participants have voluntarily agreed to perform and are influenced by social pressure and the desire to entertain, not by loss of free will.

Is hypnotherapy scientifically supported?

For certain conditions, yes. Research supports hypnotherapy's effectiveness for chronic pain management, irritable bowel syndrome (IBS), smoking cessation, and anxiety reduction. The evidence is moderate to strong for these applications. For other claimed uses — weight loss, past-life regression, recovered memories — the evidence is weak or the practice is considered pseudoscientific.

Can everyone be hypnotized?

Most people can experience some degree of hypnosis, but susceptibility varies widely. Research using standardized scales (like the Stanford Hypnotic Susceptibility Scale) shows that about 10-15% of adults are highly hypnotizable, about 10-15% are very resistant, and the rest fall somewhere in between. Hypnotizability appears to be a stable trait, similar to other personality characteristics.

What does hypnosis feel like?

Most people describe it as a state of deep relaxation combined with focused attention. You remain aware of your surroundings and can hear the therapist's voice clearly. It's often compared to the feeling of being absorbed in a good book or a daydream — you're aware that you could snap out of it at any time, but you're choosing to stay engaged. It is not unconsciousness or sleep.

Further Reading

• American Psychological Association: Hypnosis Today
• Mayo Clinic: Hypnosis
• NIH National Center for Complementary and Integrative Health: Hypnosis
• Stanford Medicine: Hypnosis Research