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The risk of autism spectrum disorder (ASD) was increased in children of mothers with the three main types of diabetes that complicate pregnancy, findings that add new information on type 1 diabetes and extend what is already known about type 2 and gestational diabetes.
Maternal preexisting type 2 diabetes (T2D) and gestational diabetes mellitus (GDM) diagnosed by 26 weeks have been associated with increased risk of ASD in children in prior research. Less is known about ASD risk associated with maternal preexisting type 1 diabetes (T1D).
Risk of ASD was higher in children exposed in utero to maternal preexisting T1D, T2D and gestational diabetes diagnosed by 26 weeks compared with no maternal diabetes exposure.
Results suggest the severity of maternal diabetes and the timing of exposure-early versus late in pregnancy may be associated with the risk of ASD in children of mothers with diabetes.
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