Rei Otsuka1, Yukiko Nishita1, Chikako Tange1, Makiko Tomida1,2, Yuki Kato1,3, Mariko Nakamoto1,4, Tomoko Imai1,5, Fujiko Ando1,3, Hiroshi Shimokata1,6. 1. Section of National Institute for Longevity Sciences-Longitudinal Study of Aging (NILS-LSA), National Center for Geriatrics and Gerontology, Aichi, Japan. 2. Research Fellow of the Japan Society for the Promotion of Science, Tokyo, Japan. 3. Faculty of Health and Medical Sciences, Aichi Shukutoku University, Aichi, Japan. 4. Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan. 5. Faculty of Human Life and Science, Doshisha Women's College of Liberal Arts, Kyoto, Japan. 6. Graduate School of Nutritional Sciences, Nagoya University of Arts and Sciences, Aichi, Japan.
Abstract
AIM: To clarify the effectiveness of dietary diversity, calculated by dietary records, on cognitive decline. METHODS: Data were derived from the National Institute for Longevity Sciences - Longitudinal Study of Aging. Participants comprised 298 men and 272 women aged 60-81 years at baseline (second wave) who participated in the follow-up study (third to seventh wave) at least once. Cognitive function was assessed with the Mini-Mental State Examination in all study waves. Dietary diversity was determined using the Quantitative Index for Dietary Diversity based on a 3-day dietary record in the second wave. Cumulative data among participants with a Mini-Mental State Examination score >27 in the second wave were analyzed using a generalized estimating equation. Multivariate adjusted odds ratios and 95% confidence intervals for Mini-Mental State Examination scores ≤27 in each study wave according to a 1 standard deviation (increase), or quartiles of the Quantitative Index for Dietary Diversity at baseline, were adjusted for sex, age, follow-up time, baseline Mini-Mental State Examination score, education, body mass index, annual household income, current smoking status, energy intake and disease history. RESULTS: Multivariate adjusted odds ratio for a decline in Mini-Mental State Examination score was 0.79 (95% CI 0.70-0.89; P < 0.001) with a 1 SD increase in dietary diversity score, or 1.00 (reference), 0.99 (95% CI 0.70-1.43), 0.68 (95% CI 0.46-0.99) and 0.56 (95% CI 0.38-0.83) according to the lowest through highest quartiles of dietary diversity score, respectively (trend P = 0.001). CONCLUSIONS: Daily intake of various kinds of food might be a protective factor against cognitive decline in community-dwelling Japanese older adults. Geriatr Gerontol Int 2017; 17: 937-944.
AIM: To clarify the effectiveness of dietary diversity, calculated by dietary records, on cognitive decline. METHODS: Data were derived from the National Institute for Longevity Sciences - Longitudinal Study of Aging. Participants comprised 298 men and 272 women aged 60-81 years at baseline (second wave) who participated in the follow-up study (third to seventh wave) at least once. Cognitive function was assessed with the Mini-Mental State Examination in all study waves. Dietary diversity was determined using the Quantitative Index for Dietary Diversity based on a 3-day dietary record in the second wave. Cumulative data among participants with a Mini-Mental State Examination score >27 in the second wave were analyzed using a generalized estimating equation. Multivariate adjusted odds ratios and 95% confidence intervals for Mini-Mental State Examination scores ≤27 in each study wave according to a 1 standard deviation (increase), or quartiles of the Quantitative Index for Dietary Diversity at baseline, were adjusted for sex, age, follow-up time, baseline Mini-Mental State Examination score, education, body mass index, annual household income, current smoking status, energy intake and disease history. RESULTS: Multivariate adjusted odds ratio for a decline in Mini-Mental State Examination score was 0.79 (95% CI 0.70-0.89; P < 0.001) with a 1 SD increase in dietary diversity score, or 1.00 (reference), 0.99 (95% CI 0.70-1.43), 0.68 (95% CI 0.46-0.99) and 0.56 (95% CI 0.38-0.83) according to the lowest through highest quartiles of dietary diversity score, respectively (trend P = 0.001). CONCLUSIONS: Daily intake of various kinds of food might be a protective factor against cognitive decline in community-dwelling Japanese older adults. Geriatr Gerontol Int 2017; 17: 937-944.
Authors: K Motokawa; Y Watanabe; A Edahiro; M Shirobe; M Murakami; T Kera; H Kawai; S Obuchi; Y Fujiwara; K Ihara; Y Tanaka; H Hirano Journal: J Nutr Health Aging Date: 2018 Impact factor: 4.075