Adherence to the food-based Japanese dietary guidelines and prevalence of poor oral health-related quality of life among older Japanese adults in the Kyoto-Kameoka study

Daiki Watanabe; Kayo Kurotani; Tsukasa Yoshida; Hinako Nanri; Yuya Watanabe; Heiwa Date; Aya Itoi; Chiho Goto; Kazuko Ishikawa-Takata; Takeshi Kikutani; Mitsuyoshi Yoshida; Hiroyuki Fujita; Yosuke Yamada; Misaka Kimura; Kyoto-Kameoka Study Group

doi:10.1017/S0007114521003329

Adherence to the food-based Japanese dietary guidelines and prevalence of poor oral health-related quality of life among older Japanese adults in the Kyoto-Kameoka study

Br J Nutr. 2022 Aug 14;128(3):467-476. doi: 10.1017/S0007114521003329. Epub 2021 Aug 27.

Authors

Daiki Watanabe^{1

2}, Kayo Kurotani^{1

3}, Tsukasa Yoshida^{1

2}, Hinako Nanri¹, Yuya Watanabe^{1

2

4}, Heiwa Date⁵, Aya Itoi^{1

6}, Chiho Goto⁷, Kazuko Ishikawa-Takata^{1

8}, Takeshi Kikutani⁹, Mitsuyoshi Yoshida^{10

11}, Hiroyuki Fujita², Yosuke Yamada^{1

2}, Misaka Kimura^{2

12

13}; Kyoto-Kameoka Study Group

Affiliations

¹ National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo162-8636, Japan.
² Institute for Active Health, Institute of Interdisciplinary Research, Kyoto University of Advanced Science, Kyoto621-8555, Japan.
³ Faculty of Food and Health Sciences, Showa Women's University, Tokyo154-8533, Japan.
⁴ Physical Fitness Research Institute, Meiji Yasuda Life Foundation of Health and Welfare, Tokyo192-0001, Japan.
⁵ Department of Data Science, Shiga University, Shiga522-8522, Japan.
⁶ Department of Health, Sports and Nutrition, Faculty of Health and Welfare, Kobe Women's University, Hyogo650-0046, Japan.
⁷ Department of Health and Nutrition, Faculty of Health and Human Life, Nagoya Bunri University, Aichi, 492-8520, Japan.
⁸ Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo156-8502, Japan.
⁹ Division of Rehabilitation for Speech and Swallowing Disorders, Nippon Dental University, Tokyo184-0011, Japan.
¹⁰ Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical & Health Sciences, Hiroshima739-0046, Japan.
¹¹ Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Aichi, 470-1192, Japan.
¹² Laboratory of Applied Health Sciences, Kyoto Prefectural University of Medicine, Kyoto602-8566, Japan.
¹³ Department of Nursing, Doshisha Women's College of Liberal Arts, Kyoto610-0394, Japan.

Abstract

Although better diet quality is inversely related to the risk of geriatric disorders, the association of adherence to dietary guidelines with oral health-related quality of life (OHRQoL) is unclear. We aimed to investigate this association in older Japanese adults. This cross-sectional study included 7984 Japanese participants aged ≥ 65 years from the population-based Kyoto-Kameoka study. Dietary intake was estimated using a validated self-administered FFQ. The scores for adherence to the Japanese Food Guide Spinning Top (range: 0 (worst) to 80 (best)) were calculated. These scores were stratiﬁed into quartiles (Qs). Poor OHRQoL was defined as a score ≤ 50 using a 12-item Geriatric Oral Health Assessment Index. The OR and 95 % CI were calculated using multivariable logistic regression and the spline model. Higher adherence score was associated with a lower prevalence of poor OHRQoL (Q1-Q4:36·0 %, 32·1 %, 27·9 % and 25·1 %, respectively). An inverse association was found between the score for adherence to the food-based Japanese dietary guidelines and the OR of poor OHRQoL among all the participants (Q1: reference; Q2: OR, 0·87 (95 % CI: 0·75, 1·00); Q3: OR, 0·77 (95 % CI: 0·66, 0·90); Q4: OR, 0·72 (95 % CI: 0·62, 0·85); P_{for trend} < 0·001). These relationships were similar to the results in the spline model. Higher adherence to the food-based Japanese dietary guidelines is inversely associated with the prevalence of poor OHRQoL in older adults. Our results may provide useful insights to improve and maintain oral health.

Keywords: Cross-sectional study; Diet quality; Japanese Food Guide Spinning Top; Older adults; Oral health-related quality of life.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Aged
Cross-Sectional Studies
East Asian People*
Humans
Japan / epidemiology
Nutrition Policy
Prevalence
Quality of Life*