This paper conveys a vision of health psychology in three great moments. The first can be called a professional moment, wherein psychologists are introduced to the health field along with medical professionals, and develop a specific field, thereby trying to relate biomedical aspects to psychological ones. A second, or naïve moment means that health becomes an issue of responsibility of individuals. At academic levels, this coincides with the social construction of health as a dominant approach. Finally, a currently ongoing third stage is health service homogenization or integration. The main issue today is to integrate health policies of most countries through both collective and global action, as per international plans demanded by globalization.