Should metformin be preferred over insulin therapy in the management of gestational diabetes (GDM)?

The author reflects on the study titled "Maternal and neonatal circulating markers of metabolic and cardiovascular risk in the Metformin in Gestational Diabetes (MIG) trial: Responses to maternal metformin versus insulin treatment" by H.L. Barrett and colleagues published in a 2013 issue of the journal "Diabetes Care." Topics include metabolic risk in women with gestational diabetes, Metformin in Gestational Diabetes (MiG) Trial, and examination of metformin-treated and insulin-treated women.