Author:
Yokoyama Yuri,Nofuji Yu,Seino Satoshi,Abe Takumi,Murayama Hiroshi,Narita Miki,Shinkai Shoji,Kitamura Akihiko,Fujiwara Yoshinori
Abstract
AbstractObjective:The consumption of various foods is internationally recommended in healthy diet although the association between dietary variety and incident dementia is unknown. We aimed to examine the association between dietary variety and the incidence of disabling dementia in older Japanese adults.Design:We conducted a prospective cohort study. Dietary variety was assessed based on the Dietary Variety Score (DVS). DVS was assessed by counting the number of ten food components (meat, fish/shellfish, eggs, milk, soyabean products, green/yellow vegetables, potatoes, fruit, seaweed and fats/oils) that were consumed almost daily using a FFQ. Participants were categorised into low (0–2 points), middle (3–4 points) and high (5–10 points) groups based on the DVS. Data on newly diagnosed disabling dementia were retrieved from the public long-term care insurance database. Cox proportional hazards regression was used to estimate hazard ratios (HR) with 95 % CI.Setting:Yabu cohort study, Japan.Participants:A total of 4972 community-dwelling adults aged 65 years or older.Results:During the median follow-up of 6·8 years, 884 participants were newly diagnosed with disabling dementia. After adjusting for confounders, the multivariable-adjusted HR for incident disabling dementia was 0·82 (95 % CI, 0·69, 0·97) for participants in the highest DVS category compared with those in the lowest DVS category (Pfor trend = 0·019).Conclusions:A higher dietary variety is associated with a reduced risk of disabling dementia in older Japanese adults. These results have potential implications for the development of effective public nutritional approaches to prevent dementia in older adults.
Publisher
Cambridge University Press (CUP)
Subject
Public Health, Environmental and Occupational Health,Nutrition and Dietetics,Medicine (miscellaneous)
Reference40 articles.
1. Food diversity and its relationship with nutrient intakes and meal days involving staple foods, main dishes, and side dishes in community-dwelling elderly adults;Narita;Nihon Koshu Eisei Zasshi,2020
2. Cognitive Impairment and Dietary Habits Among Elders: The Velestino Study
3. 1. World Health Organization (2017) Dementia: Number of People Affected to Triple in Next 30 Years. https://www.who.int/news/item/07-12-2017-dementia-number-of-people-affected-to-triple-in-next-30-years (accessed June 2022).
4. Trajectories of Dietary Variety Score among community-dwelling older Japanese and their related factors
5. Albumin and Hemoglobin Trajectories and Incident Disabling Dementia in Community-Dwelling Older Japanese