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Many years' experience with complex supervision of the environmental radiation situation, the specific features of the population's physiological and health status after radiation accidents (the Chernobyl, Kyshtym and other accidents). The paper emphasized the necessity of having a knowledge of the specific features of the influence of a radiation factor (and its components) on establishing the radiation dose for the population due to the environmental peculiarities of the radiation background in different regions and abnormal zones of the Earth. The paper provides evidence for the need to apply an environmental and physiological approach to working out the standards of radiation doses for the inhabitants of post-accident polluted areas. To this end, a concept of the regional standard of exposure is proposed for different regions of the Earth with regard to the specific natural radiation background, technogenic and medical "additives" on making diagnostic and therapeutical efforts by using X-rays and radiation therapy. A new concept is offered to develop the life-support systems in the areas exposed to radiation contamination, whose main goal is to minimize radiation exposures with regard of data on each area-specific data on the regional standard of the pre-accident radiation background, technogenic background, medical additives and prediction of future radiation doses. Exposure of the population to radiation is minimized by reasonably operating its components and making special life regimens in the contaminated areas.