How well hypnosis works to help people stop smoking depends on who you ask. Study results have been mixed. In 2010, a systematic review of published studies found that there wasn't enough evidence to support the use of hypnosis. Another review published in 2012 said that studies do support a possible benefit from the use of hypnosis. In discussing alternative methods for quitting smoking on its web site, the American Cancer Society says that while controlled studies have not supported the effectiveness of hypnosis, there is anecdotal evidence that some people have been helped.
Although there are different techniques, clinical hypnotherapy is generally performed in a calm, therapeutic environment. The therapist will guide you into a relaxed, focused state and ask you to think about experiences and situations in positive ways that can help you change the way you think and behave. Unlike some dramatic portrayals of hypnosis in movies, books, or on stage, you will not be unconscious, asleep, or in any way out of control of yourself. You will hear the therapist’s suggestions, but it is up to you to decide whether or not to act on them.