{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T18:26:11Z","timestamp":1772821571464,"version":"3.50.1"},"reference-count":47,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2008,3,10]],"date-time":"2008-03-10T00:00:00Z","timestamp":1205107200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Endocrinology"],"published-print":{"date-parts":[[2008,10]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p><jats:bold>Objective\u2002<\/jats:bold> The purpose of this study was to provide an estimate of vitamin\u00a0D status in young women residing in south\u2010east Texas and to determine factors that predict 25\u2010hydroxyvitamin\u00a0D (25\u2010OHD) concentration.<\/jats:p><jats:p><jats:bold>Design\u2002<\/jats:bold> A cross\u2010sectional study was conducted on 800 non\u2010Hispanic white, non\u2010Hispanic black, and Hispanic women 16\u201333\u00a0years of age, who were seen in an outpatient clinic.<\/jats:p><jats:p><jats:bold>Measurements\u2002<\/jats:bold> Information was obtained on race, smoking, exercise and dietary intake of vitamin\u00a0D. Percentage total body fat (%TBF) was assessed using dual\u2010energy X\u2010ray absorptiometry (DXA). Exposure to sunlight was estimated by examining national records of temperature, hours of daylight and UV index for the latitude of the study site. To determine the relationship between 25\u2010OHD and %TBF, season, race, body mass index (BMI), dietary vitamin\u00a0D, age and smoking in a multivariate context, stepwise linear regression analysis was performed.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold> Serum 25\u2010OHD levels differed among the racial groups (all pairwise differences <jats:italic>P\u00a0&lt;<\/jats:italic>\u00a00\u00b7001), with the lowest value among non\u2010Hispanic blacks (37\u00b77\u00a0nmol\/l) and the highest value among non\u2010Hispanic whites (71\u00b78\u00a0nmol\/l). Among Hispanics, mean serum 25\u2010OHD was 47\u00b79\u00a0nmol\/l. Serum 25\u2010OHD was negatively associated with %TBF (<jats:italic>r<\/jats:italic>\u00a0=\u00a0\u20130\u00b728), BMF (<jats:italic>r<\/jats:italic>\u00a0=\u00a0\u20130\u00b736) and TBF (<jats:italic>r<\/jats:italic>\u00a0=\u00a0\u20130\u00b733), all <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00\u00b7001, and positively associated with dietary vitamin\u00a0D (<jats:italic>r<\/jats:italic>\u00a0=\u00a00\u00b710) and pack years of smoking (<jats:italic>r<\/jats:italic>\u00a0=\u00a00\u00b711), both <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00\u00b701. In the summer months, serum 25\u2010OHD values were higher (55\u00b74\u00a0nmol\/l) than in the winter months (48\u00b71\u00a0nmol\/l), <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00\u00b7001. The final regression model predicting serum 25\u2010OHD levels included race, %TBF and season (all <jats:italic>P\u00a0&lt;<\/jats:italic>\u00a00\u00b705) and explained 36% of the variance in 25\u2010OHD.<\/jats:p><jats:p><jats:bold>Conclusions\u2002<\/jats:bold> Favourable environmental conditions do not result in sufficient vitamin\u00a0D status for young women, especially non\u2010Hispanic blacks, Hispanics and the obese.<\/jats:p>","DOI":"10.1111\/j.1365-2265.2008.03233.x","type":"journal-article","created":{"date-parts":[[2008,3,11]],"date-time":"2008-03-11T01:49:18Z","timestamp":1205200158000},"page":"535-541","source":"Crossref","is-referenced-by-count":45,"title":["Association of race, body fat and season with vitamin\u00a0D status among young women: a cross\u2010sectional study"],"prefix":"10.1111","volume":"69","author":[{"given":"Kevin","family":"McKinney","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carmen Radecki","family":"Breitkopf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abbey B.","family":"Berenson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2008,9,10]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1093\/ajcn\/76.1.187"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.amjhyper.2007.01.017"},{"key":"e_1_2_6_4_2","first-page":"97","article-title":"The prevalence of hypovitaminosis D among US adults: data from the NHANES III","volume":"15","author":"Zadshir A.","year":"2005","journal-title":"Ethnicity and Disease"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/S8756-3282(02)00692-0"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2002-020978"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2004-1765"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2003-031398"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2004-0746"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1172\/JCI112134"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.nu.08.070188.002111"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1749-6632.1988.tb18789.x"},{"key":"e_1_2_6_13_2","volume-title":"Effectiveness and Safety of Vitamin D in Relation to Bone Health","author":"Cranney A.","year":"2007"},{"key":"e_1_2_6_14_2","volume-title":"UV Index: Annual Time Series, Houston TX 2001\u20132005","author":"Climate Prediction Center"},{"key":"e_1_2_6_15_2","unstructured":"National Climatic Data CenterandPhysical Sciences Division Earth System Research Laboratory National OceanicandAtmospheric Administration U.S. Department of Commerce.Climate at a Glance: Comparative Data Tables Generated for 2001\u20132005. 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