The experimental and natural studies have revealed the role of the low-humidity Far-North environment in forming a specific heat-exchange pattern and corresponding functional and morphological changes in the organism, and have confirmed the biological and hygienic importance of the low-humidity environment.
A range of multi-sided studies, carried out in various regions of Far North (Jamalo-Nenets autonomous region, Komi republic, Sakha republic (Yakutia)) have established the leading hygienic risk factors of population health deterioration, including those characteristic of small nationalities of North. The consideration of the obtained data, including regional alimentary status peculiarities, the condition of metabolic processes and antioxidant balance of the organism, allowed establishment of effective approaches to the maintenance of notherners' health. These approaches are based upon the optimization of nutrition as an element of population health control under extremal conditions.
In order to establish priorities in health-improving programs the researchers analyzed the hygienic situation at Novolipetsk metallurgical complex and ranked its technological divisions according to labor conditions of 73 basic professions and state of health of the workers engaged to agglomeration works (AW), chemical-recovery works (CRW), plate rolling (PR) and the workers of a blast-furnace shop (BFS) and an oxygen-converter shop (OCS-I and OSC-II).
The scientifically grounded sound regimen is required for schoolchildren, younger ones in particular, who most experience unfavourable environmental factors. Particular emphasis should be laid on the regulation of educational burden at primary school since the irrational distribution of classes leads to the development of fatigue mainly in young schoolchildren and hence to lower working capacities and poor comprehensibility. The investigations have supported the earlier data that the children show the strained body's functional status which is deteriorated by the influence of educational burden. The findings suggest that there is a need to elaborate scientifically grounded preventive measures to minimize the unfavourable influence of environmental factors in the North and to develop and implement the means that enhance adaptive capabilities of the children there.