Hypnosis has long been recognised as an effective tool for producing behavioural change in the eating disorders anorexia and bulimia. Despite many studies from the latter half of the last century suggesting that hypnosis might also be of value in managing obesity situations, the efficacy of the hypnotherapeutic approach for weight reduction has received surprisingly little formal research attention since 2000.This review presents a brief history of early clinical studies in the use of hypnosis for weight reduction; and describes an hypnotherapeutic approach within which a combination of instructional/pedagogic, and exploratory therapeutic sessions can work together synergistically to maximise the potential for sustained weight loss. Hypnotic modulation of appetite and satiation associated peptides and hormones levels may yield additional physiological benefits in type-1 and type-2 diabetes. Between 1959 and over 40 reports were published specifically describing the use of hypnosis for weight reduction (Table 1). The studies varied in size from >100 participants (Goldstein, 1981;, through smaller trials of 20-75 patients, down to those quoting individual case studies (Hanning, 1975;Munro, 1989, ;. Amongst the earliest descriptions of use of hypnosis in a medical situation to treat obesity was Brodie (1964) who (rather contentiously) would tell his obese patients that they had the equivalent of a "fat cancer" that had been growing inside them for years and which needed removal by their learning to eat properly, through the use of his hypnotic therapy. He claimed great success with this personalised approach to treating over 525 patients, but as was the case with many of the early studies, Brodie did not employ any control group nor did he publish any numerical data to substantiate this claim, which limits severely any assessment of the true efficacy of his non-conformist approach.
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A BRIEF HISTORY OF CLINICAL HYPNOSIS FOR OBESITYMost of the authors listed in table 1 employed a sociocognitive or authoritarian approach, utilising varying combinations of suggestion, imagery, anxiety reduction, aversion, covert sensitisation and self-directed programming to facilitate changes in eating habits, usually with apparent benefit in reducing weight in their subjects. However a more analytical or exploratory approach was taken by , , Munro (1989) and , with evident success also. Induction approaches were predominantly progressive relaxation or eye gaze fixation, either in groups or individually, with devices such as hand levitation being used to enhance the depth of hypnosis and hence increase the benefits of the hypnosis sessions (Goldstein, 1981). Some studies additionally taught participants self-hypnosis and/or provided hypnosis tapes for home use.It is difficult to accurately evaluate the claims made by many of these reports as only 17 out of the 43 studies listed incorporated a control cohort, and in only 9 studies were patients followed-up after their hypnosis-induced weight loss to monitor for weight regain, ...