An inquiry, by the "Duplicate Portion" technique, has been made to estimate the daily assimilation of cadmium in various collectivities of Rome, representative of different economical-social and sanitary realities. At this regard, 132 complete meals, coming from a hospital canteen, a nursing home for old people, a big company, a community of students and an agricultural firm, have been examined. The sample has been mineralized to white ashes and analyzed in spectrophotometry at A.A. with a little oven of graphite. The data about cadmium assimilation, that we have obtained, are included between 12 and 25 micrograms/day and they are placed at medium-low levels, if we compare then with an assimilation of 15-60 micrograms/day, carried from studies on various populations. No daily data exceeded the limit of tolerability of 57-71 micrograms/day suggested from the W.H.O. Our data, coming the point, do not indicate a particular situation of danger for the groups of population we have studied.