• Non-skeletal health effects of Vitamin D supplementation: A systematic review on findings from meta-Analyses summarizing trial data 

      Rejnmark, Lars; Bislev, Lise Sofie; Cashman, Kevin D.; Eiríksdóttir, Gudny; Gaksch, Martin; Grübler, Martin; Grimnes, Guri; Gudnason, Vilmundur; Lips, Paul; Pilz, Stefan; Van Schoor, Natasja M.; Kiely, Mairead; Jorde, Rolf (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-07)
      Background:<br>A large number of observational studies have reported harmful effects of low 25-hydroxyvitamin D (25OHD) levels on non-skeletal outcomes. We performed a systematic quantitative review on characteristics of randomized clinical trials (RCTs) included in meta-analyses (MAs) on non-skeletal effects of vitamin D supplementation.<br>Methods and findings:<br>We identified systematic reviews ...
    • Vitamin D and mortality: Individual participant data meta-analysis of standardized 25-hydroxyvitamin D in 26916 individuals from a European consortium 

      Gaksch, Martin; Jorde, Rolf; Grimnes, Guri; Joakimsen, Ragnar Martin; Schirmer, Henrik; Wilsgaard, Tom; Mathiesen, Ellisiv B.; Njølstad, Inger; Løchen, Maja-Lisa; März, Winfried; Kleber, Marcus E.; Tomaschitz, Andreas; Grübler, Martin; Eiriksdottir, Gudny; Gudmundsson, Elias F.; Harris, Tamara B.; Cotch, Mary Frances; Aspelund, Thor; Gudnason, Vilmundur; Rutters, Femke; Beulens, Joline W.J.; Van't Riet, Esther; Nijpels, Giel; Dekker, Jacqueline M.; Grove-Laugesen, Diana; Rejnmark, Lars; Busch, Markus A.; Mensink, Gert B.M.; Scheidt-Nave, Christa; Thamm, Michael; Swart, Karin M.A.; Brouwer, Ingeborg A.; Lips, Paul; Van Schoor, Natasja M.; Sempos, Christopher T.; Durazo-Arvizu, Ramón A.; Škrabáková, Zuzana; Dowling, Kirsten G.; Cashman, Kevin D.; Kiely, Mairead; Pilz, Stefan (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-16)
      Background:<br>Vitamin D deficiency may be a risk factor for mortality but previous meta-analyses lacked standardization of laboratory methods for 25-hydroxyvitamin D (25[OH]D) concentrations and used aggregate data instead of individual participant data (IPD). We therefore performed an IPD meta-analysis on the association between standardized serum 25(OH)D and mortality.<br>Methods:<br>In a European ...
    • Vitamin D deficiency in Europe: pandemic? 

      Cashman, Kevin D.; Dowling, Kirsten G.; Škrabáková, Zuzana; Gonzalez-Gross, Marcela; Valtueña, Jara; De Henauw, Stefaan; Moreno, Luis; Damsgaard, Camilla T.; Michaelsen, Kim F.; Mølgaard, Christian; Jorde, Rolf; Grimnes, Guri; Moschonis, George; Mavrogianni, Christina; Manios, Yannis; Thamm, Michael; Mensink, Gert B.M.; Rabenberg, Martina; Busch, Markus A.; Cox, Lorna; Meadows, Sarah; Goldberg, Gail; Prentice, Ann; Dekker, Jacqueline M.; Nijpels, Giel; Pilz, Stefan; Swart, Karin M.; Van Schoor, Natasja M.; Lips, Paul; Eiriksdóttir, Gudny; Gudnason, Vilmundur; Cotch, Mary Frances; Koskinen, Seppo; Lamberg-Allardt, Christel; Durazo-Arvizu, Ramon A.; Sempos, Christopher T.; Kiely, Mairead (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-10)
      Background:<br>Vitamin D deficiency has been described as being pandemic, but serum 25-hydroxyvitamin D [25(OH)D] distribution data for the European Union are of very variable quality. The NIH-led international Vitamin D Standardization Program (VDSP) has developed protocols for standardizing existing 25(OH)D values from national health/nutrition surveys.<br>Objective:<br>This study applied VDSP ...