The most important medical and social problem of modern health care are diseases of the circulatory system, the high incidence of which is due to the interaction of a number of factors, among which a certain place is occupied by the living environment. The purpose and objectives of the study - to lead ecological and hygienic assessment of the prevalence of diseases of the circulatory system in the population of Primorsky Krai. Material and methods. Ecological and hygienic assessment of the prevalence of diseases of the circulatory system in the population of Primorsky Krai was carried out for the period 2000-2017, depending on the bioclimatic zone, environmental situation and habitat factors. Characteristics of the habitat were carried out according to 8 sanitary-hygienic and 7 natural-climatic modular factors, based on a 10-point system in accordance with the developed assessment scale. The dependences between environmental factors and the level of circulatory diseases were assessed by regression analysis, and the statistical significance was assessed by Chi - square (Pearson) criterion. Results. During the period 2000-2017 in Primorsky Krai there was an increase in the incidence of diseases of the circulatory system by 38%, and since 2006 they have come to the first place in the structure of morbidity and amounted to 43-49%. Among the diseases of the circulatory system is dominated by hypertension, coronary heart disease, cerebrovascular disease. It is established that the prevalence of diseases of the circulatory system in the population is influenced by the following sanitary and hygienic parameters: the level of air pollution, the characteristic of chemical pollution, adverse physical factors, transport loads. The prevalence of diseases of the circulatory system has a strong relationship with a number of climatic parameters: the number of days with the biological activity of solar radiation, latitude, air speed. Discussion. Climatic and ecological factors of the region, social and demographic features can cause deviations of the health status of the population from the all-Russian trends. Conclusion. The dependence of the prevalence of diseases of the circulatory system on the bioclimatic zone, the degree of stress of the environmental situation in the Primorsky territory, as well as environmental factors.

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