Jennifer Sumner, PhD, is an Instructor at the Center for Behavioral Cardiovascular Health at Columbia University Medical Center and a Visiting Scientist at the Harvard T.H. Chan School of Public Health. She is a licensed clinical psychologist whose work focuses on the mechanisms by which trauma exposure contributes to negative outcomes for emotional and physical health. She takes a life-course perspective on trauma, studying mechanistic processes in children, adolescents, and adults. Her recent work has examined the pathways by which trauma exposure and posttraumatic stress disorder (PTSD) contribute to cardiovascular disease, particularly in women. She is the recipient of a Career Development Award from the National Heart Lung and Blood Institute to pursue this work. Her research provides evidence that PTSD is not solely a mental health problem but also increases risk of chronic disease, and it demonstrates the need for integrated mental and physical health care. She received her BA from Pomona College and her PhD from Northwestern University.