Abstract Title:

Can chocolate consumption reduce cardio-cerebrovascular risk? A systematic review and meta-analysis.

Abstract Source:

Nutrition. 2018 Feb ;46:103-114. Epub 2017 Sep 25. PMID: 29290347

Abstract Author(s):

Vincenza Gianfredi, Tania Salvatori, Daniele Nucci, Milena Villarini, Massimo Moretti

Article Affiliation:

Vincenza Gianfredi


A systematic review and meta-analysis of the literature was performed to assess the relationship between chocolate intake and cardio-cerebrovascular risk in the general population. A structured search of the literature was performed in the PubMed database up to September 26, 2016, using predetermined keywords. Epidemiologic studies evaluating the risk for cardiovascular diseases (CVDs; i.e., stroke, acute myocardial infarction [MI], heart failure, coronary heart disease) were included according to different rates of chocolate intake. The software ProMeta 3 was used to perform the meta-analysis. The systematic review identified 16 eligible studies. The majority of the studies showed a protective effect of chocolate intake compared with unexposed individuals. The overall risk ratio (effect size [ES]) of CVD for the highest versus the lowest category of chocolate consumption was 0.77 (95% confidence interval [CI], 0.71-0.84; P = 0.000) with a moderate heterogeneity. The risk related to subgroups of CVD and in particular, the risk for MI was further analyzed: ES = 0.78 (95% CI, 0.64-0.94; P = 0.009) without statistical heterogeneity (I2 = 46.56%; P = 0.13). Moreover, the analysis performed based on sex found anES = 0.85 (95% CI, 0.77-0.95; P = 0.003) for women, with a very low grade of heterogeneity (I2 = 62.21%; P = 0.005). The results of the meta-analysis showed a potential protective effect of moderate consumption of chocolate on cardiovascular risk, especially for women, and against MI for both sexes.

Study Type : Meta Analysis

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