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Although several studies have investigated the association between dietary Glycemic Index (GI), glycemic load (GL) and depression, results are inconsistent. This systematic review and meta-analysis was performed to summarize earlier evidence on the association between dietary GI, GL, and depression.

We searched in PubMed/Medline, ISI Web of Knowledge, Scopus, EMBASE, and Google Scholar to identify related articles published until April 2018. Publications that fulfilled the following criteria were included in the current study: (1) publications with participants aged ≥ 18 years; (2) studies that considered GI or GL as the exposure; (3) studies that considered depression as the main outcome or as one of the outcomes; and (4) publications in which odds ratios (ORs) or mean difference were reported as the effect size. Finally, 11 studies, including 6 cross-sectional …