Adverse childhood experiences (ACEs) describe stressful or traumatic events of abuse, neglect, or household dysfunction early in life and have been shown to increase lifelong risk for many of the leading causes of morbidity and mortality in the US.  Our understanding of how ACEs impact lifecourse health is evolving rapidly, and it is already abundantly clear that the toxic stress of ACEs exerts substantial influence over our physiology and health outcomes. With well over half of us in California having histories of ACEs, it is also clear that ACEs are widespread and have a large impact on population health that the health care system is just beginning to grapple with. Our AAP Chapter is committed to raising awareness of ACEs among pediatricians and the public, which is why we have launched our ACEs Committee. The ACEs Committee members are experts and practitioners dedicated to sharing advances in knowledge and practice relevant to ACEs in pediatrics. Stay tuned to this page for updates on our work.