The paper presents a comparative study of social, political, economical, and health situation aged population of Brazil, Spain, and United States. A discussion was made about changing process age structure base don literature of the three countries. Data analysis confirmed improvements in ag people life conditions, and changing on social insertion and political and moral attitudes. Data indicat also that there are no similarities or differences among the countries which can be attributed to econom conditions, nor to cultural traditions. The duality expresses a transition in this segment, traditiona viewed in a negative way and, nowadays, also considered as economic and familiar support. T perspectives are that the aged people positive social role will be emphasized by naturalization of agi and by establishing de analytic references on aging itself. [ABSTRACT FROM AUTHOR]