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An exploration of the role of a fish-oriented diet in cognitive decline: a systematic review of the literature.

ABSTRACT: Epidemiological studies have presented inconsistent evidence of the correlation between a fish-oriented dietary intake (FDI) and the risk of cognitive decline. To address these controversies, we performed this systematic review of prospective studies published in December 2016 and earlier using PubMed, Embase, and Web of Science. Two independent researchers conducted the eligibility assessment and data extraction; all discrepancies were solved by discussion with a third researcher. The pooled relative risks (RRs) focused on the incidence of events were estimated with 95% confidence intervals (CIs). Overall, nine studies containing 28,754 subjects were analyzed. When the highest and lowest categories of fish consumption were compared, the summary RR for dementia of Alzheimer type (DAT) was 0.80 (95%CI = 0.65-0.97); i.e., people with a higher intake of fish had a 20% (95%CI = 3-35%) decreased risk of DAT. Additionally, the dose-response synthesized data indicated that a 100-g/week increase in fish intake reduced the risk of DAT by an additional 12% (RR = 0.88, 95%CI = 0.79-0.99). Non-significant results were observed for the risk of dementia of all causes (DAC) and mild cognitive impairment (MCI). Limited evidence involving heterogeneity was found within subgroups or across studies. In conclusion, this review confirmed that a higher intake of fish could be correlated with a reduced risk of DAT. Further research, especially prospective studies that specifically quantify FDI, will help find a more accurate assessment of the different levels of dietary intake.

SUBMITTER: Zeng LF

PROVIDER: S-EPMC5503660 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature

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An exploration of the role of a fish-oriented diet in cognitive decline: a systematic review of the literature.

Zeng Ling-Feng LF Cao Ye Y Liang Wei-Xiong WX Bao Wen-Hu WH Pan Jian-Ke JK Wang Qi Q Liu Jun J Liang Hao-Dong HD Xie Hui H Chai Yan-Ting YT Guan Zi-Tong ZT Cao Qian Q Li Xiao-Yan XY Yang Lei L Xu Wei-Hua WH Mi Sui-Qing SQ Wang Ning-Sheng NS

Oncotarget 20170601 24

Epidemiological studies have presented inconsistent evidence of the correlation between a fish-oriented dietary intake (FDI) and the risk of cognitive decline. To address these controversies, we performed this systematic review of prospective studies published in December 2016 and earlier using PubMed, Embase, and Web of Science. Two independent researchers conducted the eligibility assessment and data extraction; all discrepancies were solved by discussion with a third researcher. The pooled re ...[more]

PMID: 28418899

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An exploration of the role of a fish-oriented diet in cognitive decline: a systematic review of the literature.

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An exploration of the role of a fish-oriented diet in cognitive decline: a systematic review of the literature.

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