[en] An interactive code, FOOD, has been written in BASIC for the UNIVAC 1108 to facilitate calculation of internal radiation doses to man from radionuclides in food products. In the dose model, vegetation may be contaminated by either air or irrigation water containing radionuclides. The model considers two mechanisms for radionuclide contamination of vegetation: direct deposition of leaves, and uptake from soil through the root system. The user may select up to 14 food categories with corresponding consumption rates, growing periods, and either irrigation rates or atmospheric deposition rates. These foods include various kinds of produce, grains, and animal products. At present, doses may be calculated for the total body and six internal organs from 186 radionuclides. Dose summaries can be displayed at the local terminal. Further details on percent contribution to dose by nuclide and by food type are available from an auxiliary high-speed printer. This output also includes estimated radionuclide concentrations in soil, plants, and animal products