A large study of 56·1 million pregnancies, published in The Lancet Diabetes and Endocrinology on Tuesday, has reinforced the link between maternal diabetes and the risk of neurodevelopmental disorders such as autism, attention-deficit hyperactivity disorder (ADHD).

Researchers from the Central South University in China conducted a systematic review and meta-analysis of 202 studies, involving 56,082,462 mother-child pairs.