Progression to type 2 diabetes in women with a known history of gestational diabetes: systematic review and meta-analysis

Meta-analysis of 20 studies (n=67,956 with gestational diabetes mellitus [GDM],1,264,417 controls) found those with a history of GDM appear to have a~ 10-fold higher risk of developing type 2 than those with a normoglycaemic pregnancy (RR 9.51, 95% CI, 7.14 to 12.67, p<0.001).

Source:

British Medical Journal