Vit D supplements do not prevent GDM

High-dose vitamin D supplementation during pregnancy does not improve glucose levels and may not reduce the risk of gestational diabetes, say Australian researchers.

Their Sydney-based study randomised 180 pregnant women with 25OHD <32 ng/mL to either the recommended low-dose of 300 IU oral vitamin 3D daily or a high dose of 5000 IU.

An oral glucose tolerance test at 26-28 weeks showed no difference in glucose

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