Aim:
The aim is to investigate changes in the indicators of somatic and mental health of instructor-officers in higher educational institutions with specific learning environment under stress.

Material and methods:
The research involved instructor-officers of the National Academy of Internal Affairs (Ukraine, n = 86) with different teaching experiences: up to 10 years (group 1, n = 22), from 10 to 20 years (group 2, n = 31), over 20 years (group 3, n = 33). The study of somatic and mental health was carried out in September-October 2021 (Stage 1) and in September-October 2023 (Stage 2).

Results:
Significantly negative changes in the indicators of somatic and mental health of instructor-officers with different experiences of teaching under stress were found. The most pronounced negative changes were found in the body weight index, vital index, strength index, Martin-Kushelevsky index, and emotional exhaustion of instructors. Among the studied groups of instructor-officers, the greatest changes occurred in instructors with 10 to 20 years of experience and more than 20 years, and the least – in instructors with up to 10 years of experience.

Conclusions:
It was found that the professional activities of instructor-officers, which take place under stress, negatively affect both the somatic and mental health of instructors, regardless of their teaching experience. Such activities lead to an increase in body weight, deterioration of the functioning of the main body systems, and increased professional burnout of instructors. This can lead to several psychosomatic disorders and diseases in instructor-officers and a decrease in the quality of their teaching activities.