In France we are not well aware of the health of people in situation of poverty: they have not resources enough to care of oneself, not knowing the services of social welfare, and not identified by these services. 1) Some studies in Great Britain and in U.S. have followed up some deprived groups with health index on a long duration: life expectancy at birth, number of stillbirths in the group, low birth weight, casualty during childhood, violent deaths among teen agers and young men. Disparities between rich and poor are dramatic, unskilled men have a mortality three times that of professional men; advantage is given to people who had had some education and a steady family home during childhood, compared with those who have not. 2) In France investigations have been more accurate on the health of deprived individuals: where are they taken care of, who cures them for which diseases? According to the results, they are not abandoned. Places for reception and care are many, the public institutions welcome them even without social security guarantee, almost a hundred non profit associations may help them: these discreet institutions are poorly known even by the public administration.