Oral Hypofunction and Risk of Weight Change among Independent Older Adults
2023
Chihiro Shiota | Taro Kusama | Kenji Takeuchi | Sakura Kiuchi | Ken Osaka
Oral health is essential for nutritional status: however, little is known about its association with weight change. This study aimed to investigate whether the risk of weight change differs according to the presence of each important component of oral hypofunction (fewer remaining teeth, low chewing efficiency, swallowing problems, and xerostomia) among independent older adults. This was a three-year follow-up cohort study based on self-reported questionnaires. The participants were independent older adults aged &ge:65 from the Japan Gerontological Evaluation Study (JAGES). We used >:5% weight loss/gain during follow-up as the outcome variables, and the number of remaining teeth (&ge:20/10&ndash:19/0&ndash:9), the presence of chewing difficulty, swallowing problems, and xerostomia (yes/no) as the exposure variables. We fitted the Poisson regression model, including possible confounders to estimate the risk ratios (RRs) and 95% confidence intervals (CIs). For weight loss, RRs were significantly higher among those with 0&ndash:9 remaining teeth (RR = 1.17: 95% CI = 1.11&ndash:1.23), chewing difficulty (RR = 1.12: 95% CI = 1.07&ndash:1.16), and xerostomia (RR = 1.11: 95% CI = 1.06&ndash:1.16), but there was no significant association with swallowing problems (RR = 1.01: 95% CI = 0.97&ndash:1.06). For weight gain, we also found similar associations with oral hypofunction. Oral hypofunction among older adults could have non-negligible health impacts on nutritional status.
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