[The off-season vitamin D3 deficiency of in children and adolescents of Moscow].

The detection of season deficiency was carried out among children and adolescents residing in Moscow. It is established that vitamin D3 deficiency, in all children and adolescents comprises 89% in spring and 62% in autumn. Independently of season, the vitamin D3 deficiency is least expressed in children of early age and its most propagation takes place in adolescents. The higher propagation of vitamin D3 deficiency demands the development and implementation of guidelines concerning compensation of need in vitamin D depending of age, season and region of residence of child.