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Author Mai, X.-M.; Chen, Y.; Camargo, C.A.J.; Langhammer, A. url  doi
  Title Cross-sectional and prospective cohort study of serum 25-hydroxyvitamin D level and obesity in adults: the HUNT study Type Journal Article
  Year 2012 Publication American Journal of Epidemiology Abbreviated Journal Am J Epidemiol  
  Volume 175 Issue 10 Pages 1029-1036  
  Keywords Adult; Biological Markers/blood; Body Mass Index; Cross-Sectional Studies; Female; Follow-Up Studies; Health Surveys; Humans; Hydroxycholecalciferols/blood/*deficiency; Incidence; Linear Models; Logistic Models; Male; Middle Aged; Multivariate Analysis; Norway/epidemiology; Obesity/blood/epidemiology/*etiology; Odds Ratio; Prevalence; Prospective Studies; Vitamin D Deficiency/blood/*complications; Waist Circumference  
  Abstract Experimental studies suggest that vitamin D modulates the activity of adipocytes. The authors examined baseline serum 25-hydroxyvitamin D (25(OH)D) level in relation to prevalent and cumulative incident obesity in Norway. A cohort of 25,616 adults aged 19-55 years participated in both the second and third surveys of the Nord-Trondelag Health Study (HUNT 2 (1995-1997) and HUNT 3 (2006-2008)). Serum 25(OH)D levels measured at baseline and anthropometric measurements taken at both baseline and follow-up were available for a random sample of 2,460 subjects. Overall, 40% of the 2,460 subjects had a serum 25(OH)D level less than 50.0 nmol/L, and 37% had a level of 50.0-74.9 nmol/L. The prevalence and cumulative incidence of obesity, defined as body mass index (weight (kg)/height (m)(2)) >/=30, were 12% and 15%, respectively. Lower serum 25(OH)D level was associated with a higher prevalence of obesity. In the 2,165 subjects with baseline BMI less than 30, a serum 25(OH)D level less than 50.0 nmol/L was associated with a significantly increased odds ratio for incident obesity during follow-up (adjusted odds ratio = 1.73, 95% confidence interval: 1.24, 2.41). When prevalent and incident obesity were classified according to waist circumference (>/=88 cm for women, >/=102 cm for men), similar results were obtained. In addition to prevalent obesity, a serum 25(OH)D level less than 50.0 nmol/L was significantly associated with new-onset obesity in adults.  
  Address Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology, 7491 Trondheim, Norway. xiao-mei.mai@ntnu.no  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0002-9262 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:22312120 Approved no  
  Call Number HUNT @ maria.stuifbergen @ Serial 1551  
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