Over the years, various studies have documented how the maternal brain changes and adapts following pregnancy. However, more recent research has raised a broader question, asking what happens to the brains of all caregivers with the onset of parenthood. James Swain, a psychiatrist and neuroscientist at Stony Brook University, has investigated how the parent-child bond produces behavioral and neural changes. In one of his studies, he observed that mothers' brains respond to infants' crying with activity in the auditory regions and deeper structures linked to motivation. Fathers' brains initially showed a different pattern, but between three and six months postpartum, they also displayed more extensive activity in the same areas.
This discovery raises a broader question: what actually drives the development of the parental brain? Researchers increasingly suspect there may be more than one answer. Pregnancy hormones might prime the brain through a powerful biological mechanism. But repeated care—holding, feeding, soothing, observing, worrying, responding—could shape the brain through experience.
Research points ever more clearly to the fact that the parental brain is shaped not only by sex or biological factors, but also by role and responsibilities.
Valentina Rotondi, Professor of Technologies and Public Health at SUPSI, published a study last year conducted alongside colleagues from other universities and funded by the FIDINAM Foundation. In it, she examined the potential long-term associations between parenthood and brain structure, between parenthood and well-being, and the role that brain alterations might play in shaping mothers' well-being.
Interviewed by National Geographic, she emphasizes that the lived experience of the caregiver is essential to understanding these changes. "Caregiving is not simply a biological state," she says, "it is a condition of continuous emotional and relational demand."
Caring for someone means anticipating their needs, managing the unexpected, monitoring risks, coordinating care, and remaining mentally "on duty" even in moments of apparent quiet. It is a constant attentiveness that occupies as much space in daily life as any biological factor.
"One of the risks of focusing solely on biology," Professor Rotondi observes, "is that we end up individualizing what are often structural problems." Paid leave, access to childcare, workplace flexibility, economic security, relational support, and cultural expectations: these are all factors that profoundly shape the experience of parenthood.
Researchers are trying to untangle what is biological from what is experiential, but many questions remain open. It is not yet clear which brain changes depend on hormones, which on direct caregiving, and how these forces intertwine.
Even less is known about adoptive parents, grandparents, same-sex couples, and non-traditional families, or about those who care for others in diverse socioeconomic and cultural contexts. Furthermore, it is not fully understood when high vigilance is adaptive and when it crosses the line into anxiety, depression, or obsessive distress.
Nevertheless, the field is moving toward a broader understanding of how humans adapt to caregiving. "Caring for others is demanding because humans are deeply interdependent," she says. "Children’s vulnerability, illness, aging, and dependency are not exceptions in human life; rather, they are central elements of it."
National Georaphic’s article:
Howard H. (2026): How caring for a child may reshape your brain—even without pregnancy, National Geographic. (Accessed on 16 June 2026). Available at: https://www.nationalgeographic.com/health/article/how-caregiving-changes-the-brain