Lutein Has a Positive Impact on Brain Health in Healthy Older Adults: A Systematic Review of Randomized Controlled Trials and Cohort Studies

Yagi, Ayano and Nouchi, Rui and Butler, Laurie T. and Kawashima, Ryuta (2021) Lutein Has a Positive Impact on Brain Health in Healthy Older Adults: A Systematic Review of Randomized Controlled Trials and Cohort Studies. Nutrients, 13 (6). p. 1746. ISSN 2072-6643

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Official URL: https://doi.org/10.3390/nu13061746

Abstract

A previous systematic review revealed that lutein intake leads to improved cognitive function among older adults. However, the association between lutein intake and brain health remains unclear. Methods: We searched the Web of Science, PubMed, PsycInfo, and Cochrane Library for research papers. The criteria were (1) an intervention study using oral lutein intake or a cross-sectional study that examined lutein levels and the brain, (2) participants were older adults, and (3) brain activities or structures were measured using a brain imaging technique (magnetic resonance imaging (MRI) or electroencephalography (EEG)). Results: Seven studies using MRI (brain activities during rest, cognitive tasks, and brain structure) and two studies using EEG were included. We mainly focused on MRI studies. Three intervention studies using MRI indicated that 10 mg lutein intake over 12 months had a positive impact on healthy older adults’ brain activities during learning, resting-state connectivity, and gray matter volumes. Four cross-sectional studies using MRI suggested that lutein was positively associated with brain structure and neural efficiency during cognitive tasks. Conclusion: Although only nine studies that used similar datasets were reviewed, this systematic review indicates that lutein has beneficial effects on healthy older adults’ brain health.

Item Type: Journal Article
Keywords: lutein, carotenoid, brain, MRI, VBM, systematic review
Faculty: Faculty of Science & Engineering
Depositing User: Lisa Blanshard
Date Deposited: 19 May 2022 10:26
Last Modified: 31 May 2022 16:18
URI: https://arro.anglia.ac.uk/id/eprint/707607

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