Over the past 2 decades, a vast amount of knowledge has accrued regarding the prevalence and consequences of child maltreatment. The toll of these consequences has been confirmed in well-controlled, genetically informative studies showing that child maltreatment is one of the most deleterious known influences on the mental health and development of children.1, 2, 3, 4 Child maltreatment is preventable5, 6, 7 but prevalent,8 affecting at least 1 in 8 US children. The list of child and adolescent psychiatric conditions that are caused or exacerbated by child maltreatment is long, and it can be argued that of all of the influences on child mental disorders, most which are genetic,9 child maltreatment is the single preventable cause with the highest associated disease burden, approaching 20% or more of the population-attributable risk for all psychiatric conditions of childhood.