Introduction
Smoking remains one of the leading preventable causes of death worldwide, and despite widespread awareness of its health risks, many smokers find traditional cessation methods insufficient. Hypnotherapy has emerged as a complementary approach, drawing interest from both clinicians and smokers seeking alternatives to nicotine replacement therapy and pharmacotherapy. This article reviews the current evidence base for hypnosis as a smoking cessation intervention.
How Hypnosis for Smoking Cessation Works
Clinical hypnosis for smoking cessation typically involves inducing a relaxed, focused state of consciousness in which the patient is more receptive to suggestion. The therapist then introduces targeted suggestions designed to alter the patient’s relationship with smoking — reframing the taste or smell of cigarettes as unpleasant, reinforcing the patient’s motivation to quit, and strengthening their sense of self-efficacy. Some protocols also incorporate post-hypnotic suggestions that trigger aversion or relaxation responses when the urge to smoke arises.
What the Evidence Shows
A 2019 meta-analysis published in the International Journal of Clinical and Experimental Hypnosis examined 14 randomised controlled trials involving over 1,800 participants. The pooled results indicated that participants who received hypnotherapy were approximately 1.5 to 2 times more likely to achieve smoking abstinence at six-month follow-up compared to those who received no treatment or minimal interventions. However, when compared directly to active treatments such as cognitive behavioural therapy (CBT) or nicotine replacement therapy, the advantage was less pronounced and often did not reach statistical significance.
A more recent systematic review from 2023 in Addictive Behaviours evaluated 22 studies and concluded that while hypnosis shows promise, the quality of evidence remains moderate at best. Many studies suffer from small sample sizes, lack of standardised hypnosis protocols, and insufficient blinding — a particular challenge given the nature of hypnotic intervention. The review noted that multi-session hypnosis programmes appear more effective than single-session interventions, and that combining hypnosis with CBT may yield better outcomes than either approach alone.
Key Clinical Trials
One of the largest randomised trials to date, conducted by Hasan and colleagues (2021) across three Australian hospital smoking clinics, compared four sessions of hypnotherapy against a waitlist control. At 12-month follow-up, 28% of the hypnosis group remained abstinent compared to 11% in the control group — a statistically significant difference. However, a 2022 US-based trial comparing hypnosis to the nicotine patch found comparable quit rates at 12 weeks (22% vs 24%), suggesting hypnosis is no more effective than first-line pharmacotherapy.
Limitations and Methodological Concerns
Several limitations affect the interpretation of existing research. Variability in practitioner training and hypnotic technique makes replication difficult. The placebo effect is also substantial in hypnosis research — the ritual of induction itself may produce expectancy effects that confound results. Additionally, publication bias may be present, as studies with null results are less likely to be published.
Clinical Recommendations
Current clinical guidelines from the Royal Australian College of General Practitioners (RACGP) do not list hypnotherapy as a first-line smoking cessation intervention, but acknowledge it may be considered for motivated patients who have not responded to evidence-based treatments. The NHS in the United Kingdom similarly notes that while hypnosis may help some individuals, it should not replace established cessation methods. For patients pursuing this option, working with a qualified clinical hypnotherapist who is also accredited with a recognised professional body is strongly advised.
Conclusion
Hypnosis for smoking cessation shows promise, particularly for individuals who have struggled with conventional approaches. However, the evidence base is not yet strong enough to recommend it as a standalone first-line treatment. Larger, well-controlled trials with standardised protocols are needed to establish its efficacy more definitively. For now, hypnotherapy is best considered as a complementary strategy used alongside evidence-based interventions such as CBT and pharmacotherapy.