Association of dietary diversity with all-cause mortality by body mass index in Japanese older adults: An age-specific prospective cohort study (NISSIN project)

Takabayashi，Saeka1; Hirata，Takumi2,3; Zhao，Wenjing2,4; Kimura，Takashi2; Ukawa，Shigekazu5; Tsushita，Kazuyo6; Wakai，Kenji7; Kawamura，Takashi8; Ando，Masahiko9; Tamakoshi，Akiko1,2

2022

10.1111/ggi.14446

Geriatrics & Gerontology International   Impact Factor & Quartile

1444-1586

1447-0594

Aim: Dietary diversity might reduce the risk of malnutrition, although it is also linked to obesity. We examined whether dietary diversity is associated with all-cause mortality in Japanese older adults based on their body mass index (BMI). Methods: The current study included 2944 people aged 64–65 years who participated in the New Integrated Suburban Seniority Investigation (NISSIN) project from 1996 to 2005. Dietary diversity was measured using the Food Variety Score (FVS), which calculates the frequency of all food items consumed daily using a self-administered food frequency questionnaire. Participants were divided into tertiles according to their FVS (first: low, second: middle, third: high). Multivariate adjusted hazard ratios with 95% confidence intervals were calculated using the Cox proportional hazard regression model. For the stratified analysis, BMI was used to divide the participants into three groups – lean (BMI <20), normal (BMI 20–24.9) and overweight/obese (BMI ≥25). Results: Overall, 454 (30.7%) men and 222 (15.2%) women died over a median follow-up period of 16.6 years. No significant association was observed between FVS and all-cause mortality. However, when grouped by BMI, for the participants in the lean group, the multivariate adjusted hazard ratios were 0.56 (95% confidence interval 0.32–0.96) for the middle FVS and 0.50 (95% confidence interval 0.25–1.02) for the high FVS, compared with the low FVS (P for trend = 0.059). In overweight/obese women, although not significant, total mortality was higher in the middle and high FVS. Conclusions: These findings show that dietary diversity should be promoted in lean older Japanese adults. Geriatr Gerontol Int 2022; ••: ••–••.

body mass index dietary diversity food variety score mortality older adults

SCI ; SSCI

English

Others

Japanese Society for the Promotion of Science KAKENHI["JP15390197","JP25893003","JP26460760","JP26520105","JP20K02392"]

Geriatrics & Gerontology

Geriatrics & Gerontology ; Gerontology

WOS:000839308400001

WILEY

2-s2.0-85135390620

Scopus

1.Department of Public Health,Graduate School of Medicine,Hokkaido University,Sapporo,Japan
2.Department of Public Health,Hokkaido University Faculty of Medicine,Sapporo,Japan
3.Institute for Clinical and Translational Science,Nara Medical University,Kashihara,Japan
4.School of Public Health and Emergency Management,Southern University of Science and Technology,Shenzhen,China
5.Department of Social Services and Clinical Psychology,Graduate School of Human Life Science,Osaka City University,Osaka,Japan
6.Comprehensive Health Science Center,Aichi Health Promotion Public Interest Foundation,Japan
7.Department of Preventive Medicine,Nagoya University,Graduate School of Medicine,Nagoya,Japan
8.Kyoto University Health Service,Yoshida Hon-machi,Kyoto,Japan
9.Center for Advanced Medicine and Clinical Research,Nagoya University Hospital,Nagoya,Japan

Takabayashi，Saeka,Hirata，Takumi,Zhao，Wenjing,et al. Association of dietary diversity with all-cause mortality by body mass index in Japanese older adults: An age-specific prospective cohort study (NISSIN project)[J]. Geriatrics & Gerontology International,2022.

Takabayashi，Saeka.,Hirata，Takumi.,Zhao，Wenjing.,Kimura，Takashi.,Ukawa，Shigekazu.,...&Tamakoshi，Akiko.(2022).Association of dietary diversity with all-cause mortality by body mass index in Japanese older adults: An age-specific prospective cohort study (NISSIN project).Geriatrics & Gerontology International.

Takabayashi，Saeka,et al."Association of dietary diversity with all-cause mortality by body mass index in Japanese older adults: An age-specific prospective cohort study (NISSIN project)".Geriatrics & Gerontology International (2022).