{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T21:10:24Z","timestamp":1792789824777,"version":"4.5.0"},"reference-count":46,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Korea Occupational Safety and Health Agency","award":["RS-2026-25549947"],"award-info":[{"award-number":["RS-2026-25549947"]}],"id":[{"id":"https:\/\/ror.org\/00qj2j544","id-type":"ROR","asserted-by":"crossref"}]},{"name":"Ministry of Health and Welfare","award":["HI20C1234"],"award-info":[{"award-number":["HI20C1234"]}]},{"award":["HI20C1234"],"award-info":[{"award-number":["HI20C1234"]}],"id":[{"id":"https:\/\/ror.org\/00vxgjw72","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Background: Phase angle and the extracellular water-to-total body water (ECW\/TBW) ratio, derived from bioelectrical impedance analysis, have attracted interest as biomarkers. This cross-sectional study analyzed the associations of dietary quality with phase angle and the ECW\/TBW ratio. Methods: This study used a nationally representative sample of 12,162 adults from the Republic of Korea. Dietary quality was assessed using the Korean Healthy Eating Index (KHEI; range: 0\u2013100), with higher scores indicating better dietary quality, and categorized into quartiles. Phase angle (\u00b0) and the ECW\/TBW ratio (%) were measured using a bioelectrical impedance analyzer. Linear regression models were used to analyze associations between the KHEI and phase angle and the ECW\/TBW ratio, with results reported as beta coefficients and 95% confidence intervals (CIs). Results: The mean (standard deviation) phase angle and ECW\/TBW ratio were 5.37 (0.80)\u00b0 and 38.19 (0.79)%, respectively. In the fully adjusted model, higher KHEI scores were associated with higher phase angle, with \u03b2 (95% CI) values of 0.04 (0.01, 0.07), 0.06 (0.02, 0.09), and 0.08 (0.04, 0.11) for Q2, Q3, and Q4, respectively. Additionally, higher KHEI scores were associated with a lower ECW\/TBW ratio, with \u03b2 (95% CI) values of \u22120.03 (\u22120.07, \u22120.00), \u22120.06 (\u22120.09, \u22120.02), and \u22120.07 (\u22120.10, \u22120.03) for Q2, Q3, and Q4, respectively. Conclusions: Our findings showed that dietary quality was positively associated with phase angle and negatively associated with the ECW\/TBW ratio. However, longitudinal studies are needed to confirm temporal relationships.<\/jats:p>","DOI":"10.3390\/nu18193213","type":"journal-article","created":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T09:10:54Z","timestamp":1790673054000},"page":"3213","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Association of Korean Healthy Eating Index with Phase Angle and Extracellular Water-to-Total Body Water Ratio: Findings from a Nationally Representative Study"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0882-8326","authenticated-orcid":false,"given":"Seong-Uk","family":"Baek","sequence":"first","affiliation":[{"name":"Graduate School, Yonsei University College of Medicine, Seoul 03722, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"software","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"}]},{"given":"Jin-Ha","family":"Yoon","sequence":"additional","affiliation":[{"name":"Department of Preventive Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea"},{"name":"Institute for Innovation in Digital Healthcare, Yonsei University Health System, Seoul 03722, Republic of Korea"},{"name":"The Institute for Occupational Health, Yonsei University College of Medicine, Seoul 03722, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"supervision","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"104636","DOI":"10.1016\/j.numecd.2026.104636","article-title":"Toward a comprehensive definition of diet quality: Perspectives from the Italian Society of Human Nutrition (SINU)","volume":"36","author":"Dinu","year":"2026","journal-title":"Nutr. 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