What happens to the brain when someone becomes a parent? This Masterclass dives into the fascinating neuroscience behind the transition to parenthood—unpacking the biological and emotional changes that occur during pregnancy and postpartum, in both mothers and fathers. Focusing on the science of bonding, brain plasticity, and perinatal mental health, the session sheds light on how these changes can influence behavior, emotions, and well-being. It also explores how this understanding can inform supportive practices for parents navigating the highs and lows of early parenthood. Drawing from research, lived experience, and real-world application, the session equips social sector professionals, caregivers, and educators with the tools to support new parents more effectively—ultimately benefiting both parents and children.