An analysis of medical records data from three Massachusetts health care systems finds no evidence that prenatal exposure to antidepressants increases the risk for autism and related disorders or for attention-deficit hyperactivity disorder (ADHD). ..the Massachusetts General Hospital (MGH)-based research team finds evidence that any increased incidence of autism or ADHD found in previous studies was probably associated with the severity of the mother's depression - a known risk factor for several neuropsychiatric disorders - and not from antidepressant exposure during pregnancy."