Keyword: «dynamics of the spread of diseases»

. In this article, the authors study the dynamics of the spread of the gastrointestinal tract diseases and the possible influence of psychological causes on the occurrence of diseases of this nosological group. The authors also analyze the official medical statistics of Russia and foreign psychological research in the period from 1939 to 2020 (from the beginning of the Great Patriotic War to the COVID-19 pandemic). The article presents the conclusions that the spread of digestive system diseases is dynamic, and there are changes in their characteristics. In every decade, patients with gastroenterological diseases demonstrate certain characteristic psychological traits. This allows us to conclude that an increase in the incidence can be expected in the post-pandemic period of COVID-19 infection, since there is a clear relationship between the emotional state of a person and somatic manifestations under conditions of high stress and post-traumatic stress, which affects the functioning of the digestive organs. One of the tasks of psychologists who work in the field of “psychology of health” is the prevention of somatic diseases and the preservation of psychological health through the education and formation of healthy lifestyle habits, which can have a significant impact on the prevention of gastrointestinal diseases.