A meta-analysis of hypnosis in the treatment of depressive symptoms: a brief communication

The efficacy of hypnosis in the treatment of depressive symptoms was subjected to a meta-analysis. Studies were identified using Google Scholar and 6 electronic databases: PubMed, Cochrane Library, PsiTri, PsychLit, Embase, and the Cochrane Depression, Anxiety and Neurosis Review Group (CCDAN). The keywords used were (a) hypnosis, (b) hypnotherapy, (c) mood disorder, (d) depression, and (e) dysthymia. Six studies qualified and were analyzed using the Comprehensive Meta-Analysis software package. The combined effect size of hypnosis for depressive symptoms was 0.57. Hypnosis appeared to significantly improve symptoms of depression (p < .001). Hypnosis appears to be a viable nonpharmacologic intervention for depression. Suggestions for future research are discussed.

Int J Clin Exp Hypn. 2009 Oct;57(4):431-42. Shih M, Yang YH, Koo M. Nanhua University, Chiayi, Taiwan.