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Diet-Induced Weight Loss Has No Effect on Psychological Stress in Overweight and Obese Adults: A Meta-Analysis of Randomized Controlled Trials

Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, VIC 3220, Australia
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Nutrients 2018, 10(5), 613; https://doi.org/10.3390/nu10050613
Received: 22 April 2018 / Revised: 7 May 2018 / Accepted: 10 May 2018 / Published: 14 May 2018
The effect of weight loss on psychological stress is unknown. The study aimed to investigate the effect of diet-induced weight loss in overweight and obese adults on psychological measures of stress through a meta-analysis of randomized controlled trials (RCTs). Databases including Medline Complete, Embase and PsycINFO were searched up to February 2018 for diet-induced weight loss RCTs, which included self-reported assessment of psychological stress. The mean difference between the intervention and control group of changes in stress (intervention—baseline) was used. Ten RCTs were included with 615 participants (502 women, age range 20–80 years). Overall, there was no change in stress (mean difference −0.06, 95% CI: −0.17, 0.06, p = 0.33) and no change in the five studies with a significant reduction in weight in the intervention group compared to a control group that lost no weight (mean difference in weight −3.9 Kg, 95% CI: −5.51, −2.29, p < 0.0001; mean difference in stress 0.04, 95% CI: −0.17, 0.25, p = 0.71). For all analyses, there was low heterogeneity. The benefits of weight loss for those who are overweight and obese do not appear to either increase or reduce psychological stress at the end of the weight loss period. View Full-Text
Keywords: diet; weight loss; obesity; stress; adults; meta-analysis diet; weight loss; obesity; stress; adults; meta-analysis
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Booth, A.O.; Wang, X.; Turner, A.I.; Nowson, C.A.; Torres, S.J. Diet-Induced Weight Loss Has No Effect on Psychological Stress in Overweight and Obese Adults: A Meta-Analysis of Randomized Controlled Trials. Nutrients 2018, 10, 613.

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