• Causal relationship between obesity and vitamin D status: bi-directional Mendelian randomization analysis of multiple cohorts 

      Vimaleswaran, KS; Berry, DJ; Lu, C; Tikkanen, E; Pilz, Stefan; Hiraki, LT; Cooper, JD; Dastani, Z; Li, R; Houston, Denise; Wood, Andrew R.; Michaëlsson, Karl; Vandenput, Liesbeth; Zgaga, Lina; Yerges-Armstrong, Laura M.; McCarthy, Mark I.; Dupuis, Josée; Kaakinen, Marika; Kleber, Marcus E.; Jameson, Karen; Arden, Nigel; Raitakari, Olli; Vikari, Jorma; Lohman, Kurt K.; Ferrucci, Luigi; Melhus, Håkan; Ingelsson, Erik; Byberg, Liisa; Lind, Lars; Lorentzon, Mattias; Salomaa, Veikko; Campbell, Harry; Dunlop, Malcolm; Mitchell, Braxton D.; Herzig, Karl-Heinz; Pouta, Anneli; Hartikainen, Anna-Liisa; Kvaløy, Kirsti; Midthjell, Kristian; Hveem, Kristian; Platou, Carl Geoffrey Parrinder; Streeten, Elizabeth A.; Theodoratou, Evropi; Jula, Antti; Wareham, Nicholas J.; Ohlsson, Claes; Frayling, Timothy M.; Kritchevsky, Stephen B.; Spector, Timothy D.; Richards, J. Brent; Lehtimäki, Terho; Ouwehand, Willem H.; Kraft, Peter; Cooper, Cyrus; Loos, RJF (Journal article; Peer reviewed, 2013)
      Background Obesity is associated with vitamin D deficiency, and both are areas of active public health concern. We explored the causality and direction of the relationship between body mass index (BMI) and 25-hydroxyvitamin ...