Abstract
the present study aimed to investigate the relationship between the frequency of eating together and the risk of weight loss in older adults. this was a three-year follow-up prospective cohort study based on a self-reported questionnaire. We used data from the Japan Gerontological Evaluation Study (JAGES) conducted in 2016 and 2019. The participants were independent older adults aged ≥65years in Japan. We used >5% weight loss during follow-up as the outcome variable and frequency of eating together as the explanatory variable. The relative risks (RRs) and 95% confidence intervals (95% CIs) were estimated based on the Poisson regression model with a Huber-White sandwich estimator for standard errors, including possible confounders. among 56,919 participants, the mean age was 73.0years (1SD = 5.5) at baseline, and 47.9% were male. About 15.1% (n = 8,596) of the participants experienced >5% weight loss during follow-up. The proportion of each category of the eating together frequency was 36.6% for 'every day', 10.3% for 'several times a week', 26.8% for 'several times a month', 20.5% for 'several times a year' and 5.8% for 'seldom'. Compared to 'every day', only 'several times a year (RR = 1.07, 95% CI = 1.01-1.13)' and 'seldom (RR = 1.17, 95% CI = 1.08-1.27)' were significantly associated with the increased risk of >5% weight loss. there is a temporal association between less frequent opportunities to eat together and the increased risk of weight loss among independent older adults.
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