The inhabitancy height above the sea level as a factor of the differences in body weight of newborns of different ethnicities

Along with the socio-economic and environmental factors on body weight newborns are strongly influence climatic conditions of the inhabitancy and, in particular, the height above the sea level. Studies in which implemented the differentiated approach to assessing the impact of climatic factors on the body weight of newborns of different ethnicities are rare. The aim of the our study was to examine the body weight of newborn children of the Kyrgyzstan for the time from 2003 to 2011, depending on the height of the inhabitancy of their mothers above the sea level, with taking into account the impact of environmental, economic factors, and their ethnicity. In the study was determined the body weight of 6573 newborn children (3359 boys, 3214 girls) of the Kyrgyz ethnicity and of the Uzbek ethnicity of four different areas of Kyrgyzstan, which located at different altitudes above the sea level. For the study of social, environmental conditions and other characteristics theirs mothers were interviewed by the specially developed questionnaire. In this study were established the inverse depending body mass values from the height of the inhabitants above the sea level, which has a linear character. Ethnic features of differences of body weight were in prevalence of body weight of newborns of Kyrgyz ethnicity compared with newborns of Uzbek nationality with relatively similar socio-economic, climatic and geographical conditions of inhabitants. Given that the oxygen is the main regulatory factor of the growth and development of the fetus, is the naturally that the mountains hypoxia can lead to the placental insufficiency and impaired oxygen delivery to the fetus and increase the risk of the intrauterine growth retardation. The body weight of newborns except of the factor of the inhabitancy of the height above the sea level is influenced by socio-economic conditions. Newborns from disadvantaged areas have the smaller body mass. Our findings can be explained in concordance with the study of some authors which have shown that the majority of newborns with low weight are born in families with the low living standards.

новорождённые, масса тела, высота над уровнем моря, этнос, newborns, body weight, height above the sea level, ethnicity

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