This theoretical study aims to discuss the production of self-care in scientific and mediatic discourses, based on the thougth of Michel Foucault about subject, speech and body. Science and media issues in the relationship are knowledge-power, operating through discourses in producing regimes of truth. The scientific discourses do not translate the truth about the nature of things, nor are just reproducers of the class struggles and/or the psychical conflicts. They are materiality producers of ways of living, bodies and subjects. Also the mediatic discourses are not only valued for mediating information between producers and spectators. The media produces and circulates discourses urging the subject to confess, to produce knowledge of himself. Finally, science and media are strategies of knowledge-power that together act on bodies and involve ways of self-behaviour.
discourse; subject; body