[Economics, health, and health care].

Since the seventies the growing of sanitary expenses has become the first worry for our authorities and the seeking of solutions has brought the presence of economists to solve the health problems. Therefore the health economy studies the production and distribution of health and sanitary attention in two senses: one like a discipline (usually located in universities and publications in the area of economy) and another one to the resolution of health problems and care, favouring interdisciplinary cooperation and its application to management. When speaking about the relation ship between economy and health, it is necessary to consider three areas: first that of basic concepts in economy: demand, offer, elasticity, market faults and state intervention in economy. The second aspect goes to the specific characteristics of sanitary care from economic perspective and the application of economic concepts to health field. And finally the third one is the field of the most important techniques of economic evaluation for sanitary programs and the analysis of sanitary systems reforms in some countries.