{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T21:26:39Z","timestamp":1777670799802,"version":"3.51.4"},"reference-count":36,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2018,6,26]],"date-time":"2018-06-26T00:00:00Z","timestamp":1529971200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Major Programs of Ministry of Science and Technology of the People\u2019s Republic of China during the 13th Five-Year Plan Period","award":["2017YFD0400602"],"award-info":[{"award-number":["2017YFD0400602"]}]},{"name":"the Natural Science Foundation of China","award":["81573219"],"award-info":[{"award-number":["81573219"]}]},{"name":"Key Projects of Beijing Science &amp; Technology","award":["Z1411000048140"],"award-info":[{"award-number":["Z1411000048140"]}]},{"name":"the Natural Science Foundation of Beijing","award":["Z140001"],"award-info":[{"award-number":["Z140001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Despite the importance of vitamin D in early stages of life, data are lacking on the levels of vitamin D intake and serum 25-hydroxyvitamin D (25-(OH)D) among Chinese school-age children. The aims of this study were to investigate the vitamin D intake and serum 25-(OH)D concentration of children aged 7 to 12 years in China, and to measure the associations between vitamin D status and children\u2019s growth and development parameters. We obtained data on vitamin D intake, serum 25-(OH)D concentration, and anthropometric measurements from a cross-sectional study on school-aged children in China. Multiple linear regression and multivariable logistic regression analyses assessed the associations mentioned above. A total of 563 children (9.5 \u00b1 1.6 years) from six areas of China were included. Among them, 86.1% had a vitamin D intake below the recommended nutrient intake (10 \u03bcg\/day), and 54.7% had vitamin D deficiency (serum 25-(OH)D &lt;15 ng\/mL). We also found that high vitamin D intake was inversely associated with the risk of vitamin D deficiency (OR = 0.836, 95% confidence interval: 0.713, 0.980), and serum 25-(OH)D concentration was positively associated with the intelligence score and body mass index-for-age Z-score (BAZ) (p &lt; 0.05). Insufficient vitamin D intake and serum 25-(OH)D are prevalent among Chinese school-aged children. A negative association was observed between vitamin D intake and the risk of vitamin D deficiency. Moreover, vitamin D status was positively associated with intelligence and BAZ, which await confirmation in future studies.<\/jats:p>","DOI":"10.3390\/nu10070822","type":"journal-article","created":{"date-parts":[[2018,6,26]],"date-time":"2018-06-26T10:40:50Z","timestamp":1530009650000},"page":"822","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["High Prevalence of Insufficient Vitamin D Intake and Serum 25-Hydroxyvitamin D in Chinese School-Age Children: A Cross-Sectional Study"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2189-4712","authenticated-orcid":false,"given":"Yan","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0221-0525","authenticated-orcid":false,"given":"Xinyi","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Preventive Medicine, School of Public Health, Peking University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ai","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Social Medicine and Health Education, School of Public Health, Peking University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Social Medicine and Health Education, School of Public Health, Peking University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mofan","family":"Guo","sequence":"additional","affiliation":[{"name":"Department of Preventive Medicine, School of Public Health, Peking University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6376-5006","authenticated-orcid":false,"given":"Yong","family":"Xue","sequence":"additional","affiliation":[{"name":"Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peiyu","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Social Medicine and Health Education, School of Public Health, Peking University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0103-7900","authenticated-orcid":false,"given":"Yumei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,6,26]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2014). 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