David Spiegel's research on hypnosis and quitting smoking

A result worth looking at

Some people who received hypnosis in a smoking-cessation study remained completely abstinent for two years. The research was coauthored by David Spiegel, a psychiatrist at Stanford, with E. J. Frischholz, J. L. Fleiss, and Herbert Spiegel. Published in 1993, it followed 226 consecutive smokers referred to a cessation program: 52% were fully abstinent after one week, and 23% maintained abstinence for two years. Spiegel and colleagues, 1993.

Those findings deserve attention. They describe a meaningful change for some participants, while the two follow-up periods remind us to ask how an encouraging beginning translates into something lasting. Stanford's profile places this paper within David Spiegel's wider research on hypnosis, stress, and health. David Spiegel's Stanford profile.

One session, with a skill to learn

Participants received a single habit-restructuring session involving self-hypnosis. The study also examined differences between participants: hypnotizability predicted response, and living with a significant other predicted longer maintenance. It was therefore concerned with who responded as well as how many stopped. The original study.

The phrase single session describes the clinical visit; the self-hypnosis component was part of what participants learned. Preserving that detail helps readers understand what the study offered and compare it with other kinds of support.

What a comparison would tell us

The 1993 study was an uncontrolled series, without a randomly assigned comparison group. That means its results cannot show how many of these same participants would have quit with counseling, medication, or another approach. Cochrane later excluded it from its controlled-trial review because it lacked a group that did not receive hypnotherapy. Cochrane's study assessment.

An observed success and a demonstrated treatment advantage answer different questions. We can acknowledge the first without assuming the second. This distinction helps us take promising work seriously while leaving the next research question open.

What later independent research added

A separate randomized trial by Timothy Carmody and colleagues in 2008 studied 286 smokers. Both groups received nicotine patches; one also received hypnosis, the other behavioral counseling. At twelve months, confirmed seven-day abstinence was 20% with hypnosis and 14% with counseling. Confirmation used biochemical testing or another person's report. Carmody and colleagues, 2008.

The numerical difference favoured hypnosis, but its confidence interval included no difference. The study supports further interest without establishing superiority. It also measured recent abstinence rather than two years of continuous abstinence, so its percentages cannot simply be ranked against Spiegel's. David Spiegel was not an author of this trial.

Keep the whole evidence picture in view

Cochrane's 2019 review considered 14 studies involving 1,926 participants. It judged the evidence to be low or very low certainty and could not establish that hypnotherapy worked better than other behavioral support or quitting without assistance. That conclusion can coexist with individual positive studies: a review asks how consistently an effect appears across different comparisons and research methods. Cochrane: Hypnotherapy for smoking cessation.

Curiosity can lead to an informed conversation

If hypnosis interests you, discuss it with a qualified clinician or cessation adviser. The CDC recommends counseling together with medication to give people the best chance of quitting; a professional can help choose suitable support. CDC: How to Quit Smoking.

Before booking a session, you can ask about the practitioner's training, how the program measures success, and what support follows an unsuccessful attempt. Clear answers make it easier to compare options. Hope and careful questions can sit comfortably together.

For Dreamlimen, this research is an opportunity to explore how attention and personal change are studied. It does not establish our app as a smoking-cessation treatment. A useful question to carry forward is simple: what would help me make a change, and what evidence supports that particular kind of help?