Psychology

Diet, gym, supplements, or maybe it is all in your mind? A systematic review and meta-analysis of studies on placebo and nocebo effects in weight loss in adults

Ł. Kryst, P. Bąbel, et al.

Discover the intriguing interplay of placebo and nocebo effects on weight loss in adults, revealing preliminary trends that suggest a notable impact on BMI and body fat reduction. Conducted by Łukasz Kryst, Przemysław Bąbel, and Magdalena Zegleń, this systematic review highlights the need for further research in this fascinating area.

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Abstract

This systematic review and meta-analysis investigated the placebo and nocebo effects on weight loss in adults. Preliminary trends suggest placebo effects, with slightly greater BMI and body fat reduction in placebo groups compared to controls. A nocebo effect was hinted at in one study, where expectancy of oral weight-loss agents was disadvantageous. More research is needed due to the limited number of studies.

Publisher

Obesity Reviews

Published On

Oct 06, 2023

Authors

Łukasz Kryst, Przemysław Bąbel, Magdalena Zegleń

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