The influence of climatogeographic factors on contents of the selenium in blood serum of inhabitants of the European North

The sex, age and annual dynamics of selenium level in organism of inhabitants of the Russia European North were researched (204 women, 176 men). It was shown that amount of inhabitants of the European North with selenium deficient was 32% women and 18% men. Significant reduction of the selenium level in serum in Northerners is found from May to August with the lowest level in July. Amount of persons with selenium deficient was decreased among reindeerbreeders (19% women, 14% men) in contrast with people living in city (51% women, 32% men).