Abstract
Obesity is a developed nutritional problem, and today, surgery is one of the approaches to cure it. A good understanding of the variations in food intake will be beneficial for sustaining long-term weight loss post-surgery and for improving nutrition care strategies. The purpose of this review was the comparison of the impact of two methods of gastric bypass (GBP) and sleeve gastrectomy (SG) on dietary intake. Databases of PubMed, Embase, Scopus, Google Scholar, and Web of science were used for the literature search up to June 2018. We concluded the studies that measured mean daily energy intake and the percent of macronutrients from total calorie intake of before and after GBP and SG. A total of 18 studies were finally included in the meta-analysis for the effect of bariatric surgery on food intake. Bariatric surgery significantly decreased energy intake by 1050.04 kcal/day (p < 0.001) compared with the baseline values of energy intake. The pooled effect of bariatric surgery on protein intake was 0.82 g/day (p = 0.004) compared with the baseline values. The pooled analysis found no significant impact of bariatric surgery on carbohydrate intake (WMD = 0.56 g/day; p = 0.40) compared with the baseline values. The pooled estimate of effect for bariatric surgery on fat intake was − 1.34 g/day (p = 0.006). This study demonstrates that bariatric surgery might be effective on energy and fat intake; however, there was no effect on carbohydrate intake.
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Thanks to the reviewers whose input considerably strengthened the paper.
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PJ and FS searched and wrote the paper; both of them separately did the exclusion and inclusion processes of articles, data extraction, and quality assessment. Any problem solved by ED. Sha analyzed data. ED commented on and edit the paper, also supervised the whole study.
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The present study was approved and supported by Exceptional Talent Development Center (ETDC), Tehran University of Medical Sciences (grant no.: 97-03-61-39369).
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Janmohammadi, P., Sajadi, F., Alizadeh, S. et al. Comparison of Energy and Food Intake Between Gastric Bypass and Sleeve Gastrectomy: a Meta-analysis and Systematic Review. OBES SURG 29, 1040–1048 (2019). https://doi.org/10.1007/s11695-018-03663-w
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DOI: https://doi.org/10.1007/s11695-018-03663-w