During the war of the Russian Federation against Ukraine, the mental/psychological health of the population of Ukraine has deteriorated, especially in terms of the psychosomatic health of young people, and above all, due to direct military actions on the territory of Ukraine, as evidenced by our observations of students of higher educational institutions. During air raids, bombings, etc., students continue to study in various forms of education (offline and online). That is why the issue of studying the state of mental health of young people is extremely relevant today in order to ensure a full-fledged maximum educational process. The article analyzes the socio-psychological and mental characteristics of the individual, the adaptive abilities of their body and the level of resistance to combat stress during study in higher education institutions using adapted methods to analyze professional self-determination in the course of professional training, analysis of gender peculiarities of indicators of personal qualities and adaptability to learning. Objective: to compare the peculiarities of socio-psychological and mental characteristics of the personality of future officers of the medical service reserve. Materials and methods: The survey involved 96 applicants of the 4th and 5th courses of the medical and medical-psychological faculties in the period 2021- 2023 under the program of training of reserve officers of the medical service, of which 51% (n=49) were men and 49% (n=47) were women. Results: The type of temperament of applicants was determined and it was found that 13% (n=12) have melancholic temperament, 14% (n=13) have choleric temperament, 21% (n=21) have phlegmatic temperament, and 53% (n=51) have sanguine temperament. 83% of university applicants have a low level of anxiety (58% men, 43% women). An average, acceptable level of anxiety is registered in 17% future reserve medical officers (19% men and 81% women). An average level of frustration was found in 5% of university respondents (100% female). 55% students have an average level of aggression, including 62% men and 38% women. There is no rigidity in 73% of students, such persons are characterized by ease and flexibility in behavioral reactions and decision-making, including 54% men and 46% women. Conclusions: Educational, psycho-diagnostic and psycho-hygienic activities in medical institutions of higher education should be aimed at analyzing the resources available to students to overcome stressful situations in emergency, dangerous conditions. Keywords: mental health, reserve officers of the medical service, professional self-determination, psychodiagnostic and psychohygienic activities.

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