The role of vitamin D in pregnancy outcomes in gestational diabetes: a randomized controlled trial

This study evaluated the effects of vitamin D supplementation on oxidative stress, inflammation, and pregnancy outcomes in women with gestational diabetes mellitus. A 6-week vitamin D supplementation in women with gestational diabetes mellitus improved vitamin D status, ameliorated oxidative stress and inflammation, and was associated with reduced neonatal birth weight and macrosomia, without significantly affecting glycemic control.