Association of adherence to the Australian Dietary Guidelines with cognitive performance and cognitive decline in the Sydney Memory and Ageing Study: a longitudinal analysis
This study investigated associations of adherence to the Australian Dietary Guidelines (ADG) with cognitive performance and cognitive decline over 6 years. We used longitudinal data from the Sydney Memory and Aging Study comprising 1037 community-dwelling non-demented participants aged 70–90 years....
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2021-01-01
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| Series: | Journal of Nutritional Science |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S2048679021000446/type/journal_article |
| _version_ | 1811155984327901184 |
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| author | Xi Chen Zhixin Liu Perminder S. Sachdev Nicole A. Kochan Henry Brodaty Fiona O'Leary |
| author_facet | Xi Chen Zhixin Liu Perminder S. Sachdev Nicole A. Kochan Henry Brodaty Fiona O'Leary |
| author_sort | Xi Chen |
| collection | DOAJ |
| description | This study investigated associations of adherence to the Australian Dietary Guidelines (ADG) with cognitive performance and cognitive decline over 6 years. We used longitudinal data from the Sydney Memory and Aging Study comprising 1037 community-dwelling non-demented participants aged 70–90 years. Dietary intake was assessed at baseline using the Dietary Questionnaire for Epidemiological Studies Version 2. Adherence to the ADG was scored using the Dietary Guideline Index 2013 (DGI-2013). Cognition was assessed using neuropsychological tests in six cognitive domains and global cognition at baseline and 2, 4 and 6 years later. Linear mixed models analysed the association between adherence to the ADG and cognitive function and cognitive decline over 6 years. Results indicated that overall adherence to the ADG was suboptimal (DGI-2013 mean score 43⋅8 with a standard deviation of 10⋅1; median score 44, range 12–73 with an interquartile range of 7). The percent of participants attaining recommended serves for the five food groups were 30⋅2 % for fruits, 11⋅2 % for vegetables, 54⋅6 % for cereals, 28⋅9 % for meat and alternatives and 2⋅1 % for dairy consumption. Adherence to the ADG was not associated with overall global cognition over 6 years (β = 0⋅000; 95 % CI: −0⋅007, 0⋅007; P = 0⋅95). Neither were DGI-2013 scores associated with change in global cognitive performance over 6 years (β = 0⋅002; 95 % CI: −0⋅002, 0⋅005; P = 0⋅41) nor in any individual cognitive domains. In conclusion, adherence to the ADG was not associated with cognitive health over time in this longitudinal analysis of older Australians. Future research is needed to provide evidence to support specific dietary guidelines for neurocognitive health among Australian older adults. |
| first_indexed | 2024-04-10T04:42:49Z |
| format | Article |
| id | doaj.art-5661a5de876b4a8d9b5db56fb17bf7b9 |
| institution | Directory Open Access Journal |
| issn | 2048-6790 |
| language | English |
| last_indexed | 2024-04-10T04:42:49Z |
| publishDate | 2021-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Nutritional Science |
| spelling | doaj.art-5661a5de876b4a8d9b5db56fb17bf7b92023-03-09T12:38:45ZengCambridge University PressJournal of Nutritional Science2048-67902021-01-011010.1017/jns.2021.44Association of adherence to the Australian Dietary Guidelines with cognitive performance and cognitive decline in the Sydney Memory and Ageing Study: a longitudinal analysisXi Chen0https://orcid.org/0000-0003-2575-1807Zhixin Liu1Perminder S. Sachdev2Nicole A. Kochan3Henry Brodaty4Fiona O'Leary5Dementia Centre for Research Collaboration, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, AustraliaMark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW 2052, AustraliaCentre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Sydney, AustraliaCentre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Sydney, AustraliaDementia Centre for Research Collaboration, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia Centre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Sydney, AustraliaNutrition and Dietetics Group, School of Life and Environmental Science, Charles Perkins Centre, Faculty of Science, University of Sydney, Sydney, NSW 2006, AustraliaThis study investigated associations of adherence to the Australian Dietary Guidelines (ADG) with cognitive performance and cognitive decline over 6 years. We used longitudinal data from the Sydney Memory and Aging Study comprising 1037 community-dwelling non-demented participants aged 70–90 years. Dietary intake was assessed at baseline using the Dietary Questionnaire for Epidemiological Studies Version 2. Adherence to the ADG was scored using the Dietary Guideline Index 2013 (DGI-2013). Cognition was assessed using neuropsychological tests in six cognitive domains and global cognition at baseline and 2, 4 and 6 years later. Linear mixed models analysed the association between adherence to the ADG and cognitive function and cognitive decline over 6 years. Results indicated that overall adherence to the ADG was suboptimal (DGI-2013 mean score 43⋅8 with a standard deviation of 10⋅1; median score 44, range 12–73 with an interquartile range of 7). The percent of participants attaining recommended serves for the five food groups were 30⋅2 % for fruits, 11⋅2 % for vegetables, 54⋅6 % for cereals, 28⋅9 % for meat and alternatives and 2⋅1 % for dairy consumption. Adherence to the ADG was not associated with overall global cognition over 6 years (β = 0⋅000; 95 % CI: −0⋅007, 0⋅007; P = 0⋅95). Neither were DGI-2013 scores associated with change in global cognitive performance over 6 years (β = 0⋅002; 95 % CI: −0⋅002, 0⋅005; P = 0⋅41) nor in any individual cognitive domains. In conclusion, adherence to the ADG was not associated with cognitive health over time in this longitudinal analysis of older Australians. Future research is needed to provide evidence to support specific dietary guidelines for neurocognitive health among Australian older adults.https://www.cambridge.org/core/product/identifier/S2048679021000446/type/journal_articleCognitive healthDiet qualityDietary Guide IndexFood consumptionNutrition epidemiology |
| spellingShingle | Xi Chen Zhixin Liu Perminder S. Sachdev Nicole A. Kochan Henry Brodaty Fiona O'Leary Association of adherence to the Australian Dietary Guidelines with cognitive performance and cognitive decline in the Sydney Memory and Ageing Study: a longitudinal analysis Journal of Nutritional Science Cognitive health Diet quality Dietary Guide Index Food consumption Nutrition epidemiology |
| title | Association of adherence to the Australian Dietary Guidelines with cognitive performance and cognitive decline in the Sydney Memory and Ageing Study: a longitudinal analysis |
| title_full | Association of adherence to the Australian Dietary Guidelines with cognitive performance and cognitive decline in the Sydney Memory and Ageing Study: a longitudinal analysis |
| title_fullStr | Association of adherence to the Australian Dietary Guidelines with cognitive performance and cognitive decline in the Sydney Memory and Ageing Study: a longitudinal analysis |
| title_full_unstemmed | Association of adherence to the Australian Dietary Guidelines with cognitive performance and cognitive decline in the Sydney Memory and Ageing Study: a longitudinal analysis |
| title_short | Association of adherence to the Australian Dietary Guidelines with cognitive performance and cognitive decline in the Sydney Memory and Ageing Study: a longitudinal analysis |
| title_sort | association of adherence to the australian dietary guidelines with cognitive performance and cognitive decline in the sydney memory and ageing study a longitudinal analysis |
| topic | Cognitive health Diet quality Dietary Guide Index Food consumption Nutrition epidemiology |
| url | https://www.cambridge.org/core/product/identifier/S2048679021000446/type/journal_article |
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