The “nourish to flourish” research program is a social nutrition approach that aims to better understand the social determinants of the nutritional context and practices in a perinatal context among vulnerable populations. The results of their research will make it possible to better intervene by adapting the interventions, programs and perinatal nutritional services that vulnerable populations receive. By using an interdisciplinary approach and working with a committed team, they hope to improve the nutrition, health and well-being of families.