As Camarano (1999) the aged ones are in better conditions of life of what the young, with this author does not want to say that the aged ones are in good conditions in absolute terms, and yes that the majority of the aged ones possesss proper house and a fixed income; this condition propitiates a bigger aid in the familiar budget on the part of these. In the homes whose aged they command meets a ratio significant of children liveing together, ratio this that grows with the time. The author explains that this situation occurs for the transformations that the Brazilian economy passes, culminating in great difficulties in the insertion and continuity of the young in the work market. Moreover, precocious pregnancy, prostitution, violence, drugs are phenomena that have increased enter population segment younger re-echo in the aged ones. Paraphrasing with Camarano and El Ghaouri (2003) some explanations for the occurrence of the co-residence (co-residence means to live in one same house with some generations) it is the fact of that the aged ones are living more and the young is postponing the age where they leave the house of parents. The period where the children pass as dependents of its parents if has increased, due to instability in the work market, what it makes it difficult the purchase of the proper house and the auto-sustenance; the biggest time expended in the studies and the instability of the loving relations, what it results together in the return of the children for the house of the parents with the grandsons. The co-residence consists as strategy of mutual aid between the generations. It has a privatization of the social problems for the private sphere, the family gains centralidade for the cares of its members, independently of this to have conditions substances to attend these. Alencar (2006, p.62) citing Telles (1992; 1996) affirm that the family is a species of ethical, moral and material guarantee, characterized for the logic of the destitution and privation of rights.