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cases of hypertension is significantly higher than in middle latitudes. The incidence of 

 rheumatism among indigenous persons is statistically higher than in other regions of the 

 coimtry (4.6% in males and 5% in females). Deforming arthritis was found in 38% of 

 the males and 23% of the females. A considerable proportion of indigenous females 

 suffered from anemia (10.4%) and iron deficiency (35.5%). 



It was shown that in the absence of such risk factors as hypertension, atherogenic 

 lipid profiles, etc., which are so common among migrant and European populations, 

 angina stress can be found in indigenous Chukotkans with the same frequency as in the 

 Novosibirsk population, cicatricial changes in the myocardium as revealed by EKG are 

 1.5 times more frequent, and the frequency of myocardial hypertrophies is high. 



It was found that in this case the risk factor is an excess of polyunsaturated fatty 

 acids n-3, in the diet of the Chukotka indigenous inhabitants, which have a toxic effect 

 on the myocardium. 



The composition and the ratio of polyunsatiirated fatty acids of different families 

 in the lipids of erythrocyte membranes were determined in tundra and littoral inhabitants 

 of Chukotka with different dietary habits. 



-10- 



