Perinatal and Maternal Factors Associated with Autism Spectrum Disorder

A comprehensive study of 996 confirmed ASD cases and 9,960 controls from South Sweden examined maternal and perinatal risk factors, finding multiple conditions associated with increased ASD risk that varied by comorbidity profile. High maternal BMI was the only factor consistently associated with ASD across all subgroups, suggesting potential modifiable risk factors and etiological heterogeneity in autism.