In 1986, researchers from the University of British Columbia studied 60 overweight women, who were divided into a group that received hypnosis and another group that did not receive hypnosis. They found that those women who received hypnosis lost an average of 17 pounds while the women who did not receive hypnosis lost an average of 0.5 pounds.[2.1]
In 1985, researchers from the University of Northern Colorado Department of Psychology studied 109 subjects. All were given behavioral management to lose weight, but only half were also given hypnosis. Both groups had lost a significant amount of weight at the end of the 9-week program. When followed-up at 8 months and 2 years, the group that also received hypnosis had lost even more weight, while the group that had not received hypnosis remained unchanged.[2.2]
In 1996, researchers from the University of Connecticut Department of Psychology analyzed the data from a number of studies that tested the effectiveness of adding hypnosis to cognitive behavioral therapy (“CBT”) for weight loss. They concluded that people who received hypnosis in addition to CBT lost more weight (a mean weight loss of 11.83 pounds compared to 6 pounds). They also found that those who used hypnosis continued to lose weight over time (up to 14.88 pounds) while those not using hypnosis remained at just a 6 pound loss over time.[2.3]
References
2.1. Hypnotherapy in Weight Loss Treatment
Results: This study found that those who received hypnosis lost an average of 17 (seventeen) lbs compared to an average of 0.5 lbs in the control group (there was no difference between the hypnosis only and the hypnosis and audiotapes group).
Notes: This study examined how effective hypnosis was in helping women to lose weight. It recruited 60 women who were not dieting or involved in any other program and who were at least 20% overweight. It randomly assigned the women to a control group, to a group that only received hypnosis and to a group that received hypnosis along with audiotapes.
Journal of Consulting and Clinical Psychology. Vol 54(4), Aug 1986, 489-492
By: G. Cochrane, J. Friesen, University of British Columbia
Noha Ahmed Mohamed, Seham Mohamed ElMwafie
http://psycnet.apa.org/record/1986-30794-001
2.2. Effectiveness of Hypnosis as an Adjunct to Behavioral Weight Management
Results: When followed-up at 8 months and 2 years, the group that also received hypnosis had lost even more weight, while the group that had not, remained unchanged.
Notes: This study examined the effectiveness of adding hypnosis to a behavioural management program to help people lose weight. It recruited 109 subjects and randomly split them into two groups, one which received only behavioural management and the other which received behavioural management plus hypnosis. Both groups had lost a significant amount of weight at the end of the 9-week program.
J Clin Psychol. 1985 Jan;41(1):35-41
By: D. N. Bolocofsky, D. Spinler, L. Coulthard-Morris, Department of Psychology, University of Northern Colorado, Greeley, Colorado 80639
https://onlinelibrary.wiley.com/doi/10.1002/1097-4679(198501)41:1%3C35::AID-JCLP2270410107%3E3.0.CO;2-Z
2.3. Hypnotic Enhancement of Cognitive-Behavioral Weight Loss Treatments: Another Meta-Reanalysis
Results: This study analyzed the data for a number of studies that examined the effectiveness of combining hypnosis with cognitive behavioural therapy for weight loss. It found that those who received CBT only had a mean weight loss of 6 lbs, while those who received both hypnosis and CBT had a mean weight loss of 11.83 lbs. It further found that the difference between these two groups increased over time (to 6.33 lbs versus 14.88 lbs).
Journal of Consulting and Clinical Psychology, 64 (3), 517-519, 1996
By: I. Kirsch, Department of Psychology, University of Connecticut, Storrs 06269-1020, USA
https://pubmed.ncbi.nlm.nih.gov/8698945/
