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This study aimed to investigate the association between iron status and sarcopenia. A total of 286 adult patients hospitalized between 2019 and 2021 were included in this study, of which 117 were diagnosed with sarcopenia. Serum iron, total iron binding capacity (TIBC), transferrin, and transferrin saturation levels were compared between groups with and without sarcopenia and were included in the logistic analyses, with significant variables further included in the logistic regression model for the prediction of sarcopenia. Serum iron, TIBC, and transferrin levels decreased significantly in the sarcopenia group (p\u2009&lt;\u20090.05), and were negatively associated with handgrip strength, relative skeletal muscle index, and multiple test performances (p\u2009&lt;\u20090.05). Multivariate logistic analysis showed that sex, age, body mass index (BMI), and serum iron level were independent risk factors for sarcopenia. In the final logistic regression model, male sex (odds ratio [OR] 3.65, 95% confidence interval [CI] 1.67\u20137.98), age\u2009&gt;\u200965\u00a0years (OR 5.40, 95% CI 2.25\u201312.95), BMI\u2009&lt;\u200924\u00a0kg\/m<jats:sup>2<\/jats:sup> (OR 0.17, 95% CI 0.08\u20130.36), and serum iron\u2009&lt;\u200910.95\u00a0\u03bcmol\/L (OR 0.39, 95% CI 0.16\u20130.93) were included. Our study supported the impact of iron metabolism on muscle strength and performance.<\/jats:p>","DOI":"10.1038\/s41598-024-61429-0","type":"journal-article","created":{"date-parts":[[2024,5,8]],"date-time":"2024-05-08T10:03:31Z","timestamp":1715162611000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Serum iron level is independently associated with sarcopenia: a retrospective study"],"prefix":"10.1038","volume":"14","author":[{"given":"Meiying","family":"Huang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bingqing","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yihui","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kaiyu","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenyu","family":"Zhu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoyi","family":"Lian","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhe","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minhong","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhengli","family":"Guo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,5,8]]},"reference":[{"issue":"3","key":"61429_CR1","doi-asserted-by":"publisher","first-page":"300","DOI":"10.1016\/j.jamda.2019.12.012","volume":"21","author":"LK Chen","year":"2020","unstructured":"Chen, L. 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