Gestational diabetes mellitus (GDM) is diabetes that happens when a woman is pregnant. Diabetes is when there is too much glucose in the blood. Insulin is a hormone that helps it move from the blood to the cells to be used for energy. Problems making or using it causes the glucose to build up. Hormones from the placenta can also block insulin from working.
Gestational diabetes. National Institute of Diabetes and Digestive and Kidney Diseases website. Available at: https://www.niddk.nih.gov/health-information/diabetes/types/gestational. Accessed September 12, 2017.
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