In this compelling TED talk, pediatrician Nadine Burke Harris demonstrates how a single exposure that, in high doses, affects brain development, the immune system, hormonal systems, and even gene expression. In high doses, it can lead to an increased risk of heart disease and lung cancer, as well as a 20-year decrease in life expectancy. What she is referring to is exposure to childhood trauma. Dr. Burke Harris explains the significance of childhood trauma in overall health, and how crucial it is that we both recognize the role of the trauma and learn how to effectively respond to it. Currently doctors are not well-trained to screen and manage the effects of trauma. Watch this video to see how we can better manage the effects of early childhood trauma and help prevent poor health outcomes.