Maternal diabetes and the risk of autism spectrum disorders in the offspring: a systematic review and meta-analysis.

Xu et al. (2014) pooled 12 earlier studies that tracked moms with diabetes and later autism diagnoses in their kids.

They used meta-analysis math to see if diabetes during pregnancy bumps the odds of ASD.

Kids whose moms had diabetes were about 1½ times more likely to be diagnosed with autism.

The rise was small but showed up again and again across the 12 studies.

Connolly et al. (2016) later checked electronic health records and got the same 1½-fold jump, so the signal holds outside old paper charts.

Zhong et al. (2020) looked at the wider diet picture and found folic acid and vitamins may lower ASD odds, while diabetes raises them—two sides of the prenatal coin.

Zhu et al. (2020) ran a parallel meta-analysis on moms with rheumatoid arthritis or lupus and saw a similar small climb in ASD odds, hinting that several maternal immune or metabolic problems shape fetal brain development.

When you review a child’s history, note if mom had diabetes, obesity, or autoimmune issues. It doesn’t predict autism, but it helps you explain modestly higher risk to families and keeps you alert for early red flags. Pair this info with questions about prenatal vitamins to give a fuller picture.