Pregnancy and birth are biological processes shaped by social factors, requiring sociological approaches to explain reproductive behaviour. This narrative review outlines the importance of health sociology against the background that health and illness behaviour is influenced by the social environment. The aim of this paper is to summarize the current state of research on the influence of social systems and social milieu behaviour on reproduction, pregnancy, and childbirth in order to make it easier for midwives and doctors to take these factors into account in their everyday clinical and outpatient work. First, the paper lays out the basics of how health and illness are socially constructed, looking at it from both a structural and action-oriented perspective. It then goes on to explain what this means for pregnancy and childbirth as social processes, how women's health is related to the social construction of gender roles, that breastfeeding is also a social process, and what conclusions can be drawn for the work of midwives. Pregnancy and birth are social processes based on norms and role attributions: "Decisions" regarding one's own reproductivity are usually only "self-determined" to a limited extent and tend to occur in the context of social norms and milieu-specific role expectations. The promotion of women's health depends on how milieu-specific norms and logics of action are understood. For all the professions involved in obstetrics, this results in the need for a critical examination of the sociological aspects of health. This implies the necessity for all obstetric professions to critically examine aspects of the sociology of health in order to provide women and their families with appropriate, evidence-based and client-centred care in the context of pregnancy, birth and the postpartum period, against the background of constant social change.