Question: can gestational diabetes cause vitamin d deficiency?
Answer: found that maternal 25(OH)D concentrations at 24–28 weeks of gestation were significantly lower in women with GDM [20]. They noted that 83% of GDM women had 25(OH)D levels <50 nmol/L (a cutoff often used to define vitamin D deficiency [21–24]) vs. 71% of controls.