Lee Gettler is the Reverend John A. O’Brien College Professor of Anthropology at Notre Dame, where he is the Department Chairperson and the director of the Hormones, Health, and Human Behavior Laboratory. Much of his early research focused on how men’s hormone physiology responds to major life transitions, such as marriage and fatherhood, and how men’s hormones relate to their behaviors as parents and partners. He draws on this work to help frame questions about the roles of human fathers in the evolutionary past. Working with collaborators at multiple global sites, he has expanded his focus to family systems and well being, including the psychobiology of motherhood and fatherhood, parents’ physical and mental health, and child growth, development, and physiology. Presently, Dr. Gettler works on research projects related to these interests in the United States, the Philippines, and the Republic of Congo. His work has been funded by the National Science Foundation and the Jacobs Foundation. In 2020, he received the Michael A. Little Early Career Award from the Human Biology Association, and he was recently recognized as a recipient of a Van Leer Fellowship.