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Author (up) Larose, T.L.   
  Title Vitamin D status in a Norwegian population: any link to lung function? Type Book Whole
  Year 2015 Publication Abbreviated Journal  
  Volume PhD Issue Pages  
  Keywords HUNT2; HUNT3; asthma  
  Abstract Vitamin D is predominantly synthesized from precursors in the skin after direct exposure to ultraviolet B radiation from the sun. Vitamin D can also be obtained by dietary intake of vitamin D rich food, or by supplement intake. Poor vitamin D status has been reported worldwide. Determinants include unexposed skin, high latitude, winter season, and high body mass index (BMI). Serum 25-hydroxyvitamin D (25(OH)D) is the major circulating metabolite of vitamin D and considered the best marker of vitamin D status. The association between vitamin D status and bone health is well studied, and increasing evidence suggests an association between low serum 25(OH)D level and range of non-skeletal health outcomes including respiratory disorders, such as asthma.This dissertation uses data from the Nord-Trøndelag Health Study (HUNT), one of the largest population based health studies in Norway, with clinical, lifestyle and environmental information on more than 130,000 people collected over 25 years. Using data from HUNT2 (1995-1997) and HUNT3 (2006-2008), we investigated: 1) the prevalence of vitamin D deficiency (serum 25(OH)D  
  Corporate Author Thesis Ph.D. thesis  
  Publisher NTNU Place of Publication Trondheim Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number HUNT @ maria.stuifbergen @ Larose2015a Serial 1836  
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