Being treated with insulin during the pregnancy increased the risk of developing diabetes within 10 years by 2.3 fold as compared to a woman not treated with insulin; likewise delivering a baby weighing more than 3.5 Kg increased the risk of developing diabetes by 2.4 fold as compared to a woman delivering a child less than 3.5 kg, after controlling for family history of DM in a first degree relative, GDM in previous pregnancies, parity and gestational age at delivery. This evidence concerns the gene INS and gestational diabetes.