Journal
NUTRITION REVIEWS
Volume 72, Issue 12, Pages 774-789Publisher
OXFORD UNIV PRESS INC
DOI: 10.1111/nure.12149
Keywords
cognition; cognitive function; fruit; juice; vegetable
Categories
Funding
- Biotechnology and Biological Sciences Research Council [BB/F008953/1, BB/L02540X/1, 1132989, BB/M002802/1] Funding Source: researchfish
- Biotechnology and Biological Sciences Research Council [BB/F008953/1] Funding Source: Medline
- BBSRC [BB/L02540X/1, BB/M002802/1, BB/F008953/1] Funding Source: UKRI
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Although reviews of the association between polyphenol intake and cognition exist, research examining the cognitive effects of fruit, vegetable, and juice consumption across epidemiological and intervention studies has not been previously examined. For the present review, critical inclusion criteriawere human participants, a measure of fruit, vegetable, or 100% juice consumption, an objective measure of cognitive function, and a clinical diagnosis of neuropsychological disease. Studies were excluded if consumption of fruits, vegetables, or juice was not assessed in isolation from other food groups, or if there was no statistical control for education or IQ. Seventeen of 19 epidemiological studies and 3 of 6 intervention studies reported significant benefits of fruit, vegetable, or juice consumption for cognitive performance. The data suggest that chronic consumption of fruits, vegetables, and juices is beneficial for cognition in healthy older adults. The limited data from acute interventions indicate that consumption of fruit juices can have immediate benefits for memory function in adults with mild cognitive impairment; however, as of yet, acute benefits have not been observed in healthy adults. Conclusions regarding an optimum dietary intake for fruits, vegetables, and juices are difficult to quantify because of substantial heterogeneity in the categorization of consumption of these foods. (C) 2014 International Life Sciences Institute
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