دوره 7، شماره 4 - ( 8-1401 )
جلد 7 شماره 4 صفحات 574-562 |
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Yaghoubi F, Darabi Z, Ahmadi Vasmehjani A, Sangsefidi Z S, Hosseinzadeh M. The Effect of Dark Chocolate on C-Reactive Protein Level: A Systematic Review and Meta-Analysis of Randomized Controlled Clinical Trials. JNFS 2022; 7 (4) :562-574
URL: http://jnfs.ssu.ac.ir/article-1-531-fa.html
URL: http://jnfs.ssu.ac.ir/article-1-531-fa.html
The Effect of Dark Chocolate on C-Reactive Protein Level: A Systematic Review and Meta-Analysis of Randomized Controlled Clinical Trials. Journal of Nutrition and Food Security. 1401; 7 (4) :562-574
چکیده: (1311 مشاهده)
Background: This systematic review and meta‐analysis of randomized controlled trials (RCTs) was conducted to determine the effect of dark chocolate on C-Reactive Protein (CRP) levels as one of the inflammatory factors. Methods: A literature search was conducted in PubMed, ISI Web of Science, Scopus, and Google Scholar up to April of 2020. The registration number of study in PROSPERO was CRD4202020072, which was conducted over 5 eligible RCTs containing a total of 330 participants. The weighted mean difference (WMD) with 95% confidence intervals was calculated for the pool effect size of CRP. The heterogeneity of studies was examined by Cochran's Q test and I-squared (I2) statistic. Results: Effect sizes from 330 participants based on random effect model showed no effect between consumption of dark chocolate on CRP levels compared to the control group (WMD: 0.01 mg/dl; 95% CI: −0.19, 0.22 mg/dl; P = 0.89; Cochran's Q test, Q statistic = 21.97; P < 0.001; I2 = 81.80%). The results of subgroup analysis based on intervention duration and dosage showed no significant effect on CRP levels (WMD = 0.05 mg/dl, 95% CI: −0.30, 0.42 mg/dl; P = 0.76). Meta-regression for the intervention duration (slope: −0.0033, 95% CI: −0.0089, 0.0022; P = 0.24) and dosage (slope: 0.00006, 95% CI: −0.0036, 0.0037; P = 0.97) indicated no significant relationship with the mean difference of CRP. Conclusion: The results of the present meta-analysis showed that consuming dark chocolate had no significant effect on the CRP level. More clinical trials are required with higher quality and bigger sample sizes to verify the positive impact of dark chocolate on the reduction CRP level.
دریافت: 1400/9/11 | انتشار: 1401/8/28 | انتشار الکترونیک: 1401/8/28
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