Breastfeeding and child feeding at the center of nurturing practices, yet the work of nurture has escaped the scrutiny of medical and social scientists. Anthropology offers a powerful biocultural approach that examines how custom and culture interact to support nurturing practices. Our framework shows how the unique constitutions of mothers and infants regulate each other. The Dance of Nurture integrates ethnography, biology and the political economy of infant feeding into a holistic framework guided by the metaphor of dance. It includes a critique of efforts to improve infant feeding practices globally by UN agencies and advocacy groups concerned with solving global nutrition and health problems.