The experiences that we see, hear, and feel as a child affect us. But just how much? And in what ways is our brain changed by these childhood traumas? The eighth annual Barbara Dicker Oration was presented by Dr Gustavo Turecki (McGill University, Canada). Dr Turecki has devoted his life’s work to understanding how childhood harm can impair brain development and leave adults more vulnerable to psychiatric disorders. Dr Turecki is a Professor of Psychiatry; Chair of the Department of Psychiatry at McGill University; Scientific Director of the Douglas Institute; and Director of the McGill Group for Suicide Studies. His work and contributions to the field have been recognised through numerous awards and he has authored over 450 publications in leading peer-reviewed journals such as Nature Neuroscience, Nature Medicine, and The Lancet.