• Seasonal changes in vitamin D-effective UVB availability in Europe and associations with population serum 25-hydroxyvitamin D 

      O'Neill, Colette M; Kazantzidis, Andreas; Ryan, Mary J; Barber, Niamh; Sempos, Christopher T.; Durazo-Arvizu, Ramon A.; Jorde, Rolf; Grimnes, Guri; Eiriksdottir, Gudny; Gudnason, Vilmundur; Cotch, Mary Frances; Kiely, Mairead; Webb, Ann R; Cashman, Kevin D (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-30)
      Low vitamin D status is common in Europe. The major source of vitamin D in humans is ultraviolet B (UVB)-induced dermal synthesis of cholecalciferol, whereas food sources are believed to play a lesser role. Our objectives were to assess UVB availability (Jm−2) across several European locations ranging from 35° N to 69° N, and compare these UVB data with representative population serum 25-hydroxyvitamin ...