==== Front Innov Aging Innov Aging innovateage Innovation in Aging 2399-5300 Oxford University Press US 10.1093/geroni/igaa057.769 igaa057.769 Abstracts Session 2909 (Poster) Diet and Nutrition AcademicSubjects/SOC02600 Association of Sleep Quality and Nutritional Status in Middle-Aged and Older Adults: Findings From the WCHAT Study Zhao Wanyu Zhang Yan Dong Birong West China Hospital, Sichuan University, Chengdu, Sichuan, China 2020 16 12 2020 16 12 2020 4 Suppl 1 Program Abstracts from The GSA 2020 Annual Scientific Meeting “Turning 75: Why Age Matters”238 239 © The Author(s) 2020. Published by Oxford University Press on behalf of The Gerontological Society of America.2020This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.Abstract Poor sleep quality and malnutrition are two common symptoms which are closely related to the health of middle-aged and older people, but few studies focus on the association between them. In this study, we aimed to identify associations between sleep quality and nutritional status in middle-aged and older adults. A total of 6792 community-dwelling adults aged 50 and older from the baseline of the West China Health and Aging Trend (WCHAT) study were analyzed in the present study. Sleep quality was assessed using the Pittsburgh sleep quality index (PSQI). Scores <=5, 6-10,11-15 and >=16 were categorized as good/mild impaired/moderate impaired/severe impaired sleep quality, respectively. Mini Nutritional Assessment Short Form (MNA-SF) was used to assess the nutritional status and a score<12 was identified as at risk of malnutrition. Logistic regression models were conducted to explore the associations. Of 6792 participants (mean age 62.41 ± 8.26 years, 62.49% women), 1831 (26.96%) had risk of malnutrition. The prevalence of participants with good/mild impaired/moderate impaired/severe impaired sleep quality were 53.72%, 35.54%, 9.61%, and 1.12%, respectively. In the logistic regression model, there were significant association between mild/moderate/severe impaired sleep quality and the presence of risk of malnutrition (OR=1.49, 95% CI=1.32, 1.68; OR=2.15, 95% CI=1.79, 2.59; OR=2.52, 95% CI=1.56, 4.06; all p<0.05) after adjusting for potential confounders. Sleep quality was significantly associated with malnutrition risk with a dosage effect among middle-aged and older adults. Our results highlight the importance of maintaining good sleep quality and nutritional status in middle-aged and older adults.