Features of the relationship between elemental composition and immune reactions in representatives of ethno-demographic groups of the North-East of Russia

The content of some chemical elements that support immune responses (selenium, zinc, iron, iodine) was analyzed among representatives of the ethno-demographic groups of the North-East of Russia - natives (Chukchi, Koryaks, Evens), mestizos, and newcomers. A potential risk group for the development of hyposelenoses is the Koryak ethnic group. The minimum values of zinc were found among the Chukchi. In representatives of all ethno-demographic groups, the iron content was within the reference values, but its maximum values were noted in the newcomers. The maximum iodine levels are also characteristic of the newcomers. Comparable iodine content was noted in the Evens group. Features of the elemental status (selenium, zinc, iron, iodine) in the inhabitants of the north indicate that among the ethno-demographic groups, it is the aboriginal ethnic groups that are most predisposed to the development of immunodeficiency states.