A recent Spanish study conducted by Dr. Perez-Ferre under the supervision of Professor Alfonso Calle-Pascual of the Medicina Universidad Complutense in Madrid, Spain, studied the association between vitamin D levels in pregnant women and pregnancy complications.
Perez-Ferre N, Torrejon MJ, Fuentes M, Fernandez MD, Ramos A, Bordiu E, Del Valle L, Rubio MA, Bedia AR, Montañez C, Calle-Pascual AL. Association of low serum 25-Hydroxyvitamin D levels in pregnancy with glucose homeostasis and obstetric and newborn outcomes. Endocr Pract. 2012 May 1:1-18.