One of the main resources of the health care system is medical staff, the quantity and quality of which is the key to ensuring the availability, quality and efficiency of medical care, even with 100% provision of medical equipment.
 The purpose of the study: analysis of the impact of the level of training of primary care physicians on the prevention of diseases of the circulatory system on the quality of medical care for adults (on the example of Zaporozhye region).
 Material and methods. An analysis of the health of the adult population of Zaporozhye region in connection with diseases of the circulatory system, the use of medical equipment in accordance with the standards of medical care for patients with circulatory diseases and to stratify their risk, adherence to a healthy lifestyle by adults.
 Results. The results of the survey showed low activity of health workers in preventive work among the adult population, which is confirmed not only by their insufficient use of material and technical equipment in accordance with the standards of medical care for patients with circulatory system diseases and for stratification of their risk. 10-20 minutes (82.2 ± 3.72%), 17.2 ± 7.01% of the adult population we surveyed consulted their family doctor for prevention, and the leading source of information for knowledge about a healthy lifestyle in the population is Internet (62.1 ± 9.01% of respondents).
 Insufficient preventive work by health workers among the adult population on the prevention of diseases of the circulatory system is due to lack of theoretical knowledge and imperfection of practical skills, which requires constant improvement.
 Conclusions. Based on the results of the study, gaps in the knowledge of health professionals were identified, on the basis of which a one-day training program on the prevention of diseases of the circulatory system was developed, which proved to be effective.