The transformation of social political system in the late 19th and early 20th centuries significantly deteriorated quality of life of indigenous peoples of the North and the Far East, lowering income levels and health indicators and marginalizing population. The indigenous smaller peoples are extremely vulnerable group of ethnic minorities in medical demographic terms. The purpose of the study is to analyze modern medical demographic situation and indicators characterizing health level of the Udege and the Nanai people residing village of Krasny Yar of the Pozharsky municipality of Primorsky Krai to take effective measures improving current medical demographic situation. The statistical and mathematical methods were applied in the study. In June 2025, sociological survey was carried out to identify self-assessments of quality of life of the population of village of Krasny Yar that included questions about nutrition quality. It is concluded that causes of deterioration of health of indigenous peoples of the Pozharsky municipality depend on medical biological and social economic factors. The main medical biological determinants include genetic ones determining characteristics of body functioning. The social economic factors include low level of living as a result of absence of work, change in ethnic identity under influence of mixed marriages, miscegenation, inaccessibility of highly qualified medical care. It is demonstrated that low income level of families is the main cause of poor nutrition. The active integration and assimilation processes, primarily related to alien population (Russians) resulted in destruction of traditional way of life and deterioration of health that affected decreasing of natality.

health, nutrition, Nanai, Udege, indigenous small people, Pozharsky municipality, Primorsky Krai..