INS and gestational diabetes: Regarding the relationship between age and GDM in pregnant women in the Kingdom of Bahrain, our results showed that although the FBG, RBG, and insulin levels were all higher in pregnant women with GDM aged ≥ 30 years when compared to those with GDM < 30 years, yet these levels were not significantly different between both groups. Our results were not in complete agreement with previously published studies.