Effect of bariatric surgeries on Metabolic Rate, A Systematic Review and Meta-analyses.

We aimed to summarize earlier studies on the effects of different types of bariatric surgeries on resting metabolic rate (RMR), resting energy expenditure (REE), and basal metabolic rate (BMR). The aim of this study was to determine the effects of bariatric surgery on the pulmonary function in the morbid obese patients.

We searched PubMed, SCOPUS, Web of Science, and Cochrane from inception to October 2020 using relevant keywords.   

Overall 13 studies were included. Pooled effect size suggested a significant effect of bariatric surgeries on REE (Weighted mean difference (WMD): -360.11, 95% CI: -446.67, -273.55, p < 0.0001; I2 = 69.6%), RMR (WMD: -228.05, 95% CI: -290.70, -165.41, p < 0.0001; I2 = 0%), and BMR (WMD: -551.59 mg/dl, 95% CI: -696.25, -406.92, p < 0.0001; I2 = 5.9%).

Taken together, the data suggest that bariatric surgeries have beneficial effects to reduce REE, RMR, and BMR.