Researchers have found that a persistent imbalance of thyroid hormones during pregnancy is associated with a higher risk of autism in children. The risk of autism increased with the duration of this hormone imbalance during each trimester. In contrast, women with treated thyroid disorders did not have an increased risk of autism in their children. The study therefore emphasizes the importance of regular and consistent monitoring of thyroid function during pregnancy. An imbalance of thyroid hormones can negatively affect fetal brain development, which can lead to neurodevelopmental disorders, including autism. Prevention and treatment of thyroid disorders in pregnancy can reduce these risks. This simple screening can be an important step in caring for the health of mother and baby.