“Hypnosis is the most effective way of giving up smoking, according to the largest ever scientific comparison of ways of breaking the habit. Willpower, it turns out, counts for very little.” New Scientist vol 136 issue 1845 page 6
To find the most effective method to stop smoking Frank Schmidt and research student Chockalingham Viswesvaran from the University of Iowa used a meta-analysis, utilising the results of more than 600 studies totalling nearly 72,000 people, the results, which were published in the Journal of applied psychology and included 48 studies of hypnosis covering 6000 smokers clearly showed that hypnotherapy was three times more effective than NRT. (References - vol 136 issue 1845- page 6 New Scientist)