Kirsch, Irving (1996).
Hypnotic enhancement of cognitive-behavioral weight loss treatments--Another meta-reanalysis.
Journal of Consulting and Clinical Psychology, 64 (3), 517-519.
The results were averaged across after treatment and during follow-up periods, the mean weight loss was 6.00 lbs. (2.72 kg) without hypnosis and 11.83 lbs. (5.37 kg) with hypnosis.During the last assessment period, the mean weight loss was 6.03 lbs. (2.74 kg) without hypnosis and 14.88 lbs. (6.75 kg) with hypnosis. When correlated the analyses showed that the benefits of hypnosis increased substantially over time.
Cochrane, Gordon; Friesen, J., (1986) Hypnotherapy in weight loss treatment
Journal of Consulting and Clinical Psychology. Volume: 54 489-492
This study investigated the effects of hypnosis in weight loss for 60 females, who were at least 20% overweight and not involved in other treatment. The results showed that hypnosis was more effective than a control group (17 vs. .5 pounds) on follow-up).
Bolocofsky, David N.; Spinler, Dwayne; Coulthard-Morris, Linda (1985).
Effectiveness of hypnosis as an adjunct to behavioral weight management.
Journal of Clinical Psychology, 41 (1), 35-41
109 17-67 year olds completed a behavioral treatment for weight management either with or without the addition of hypnosis. At the end of the 9-week program, both interventions resulted in significant weight reduction. The good news: at 8-month and 2-year follow-ups, the hypnosis subjects showed significant additional weight loss, while those in the behavioral-treatment-only group exhibited little further change. More subjects who used hypnosis also achieved and maintained their personal weight goals.