Vitamin D blood level and its relationship to recurrent childhood diseases

"Vitamin D blood level, factors that affect it, and its relationship to reccurent infections" is topic repeatedly discussed in domestic and foreign literature. This topic is a multidisciplinary issue, but it mainly relates to nutrition and sun exposure. The aim of this study is to map relationship of vitamin blood levels in relation to diseases of the respiratory system, vitamin D suplementation, recurrent infections, usage of sunscreen with a protective factor, nutrition and outdoor stay in winter months. The study was conducted on a research sample of preschool children. Two sets of data were used to evaluate objectives and research questions. The first research group consisted of 48 children and had 2 groups. The first group of 21 children was established in the Waldorf kindergarten in Rudolfov and the second group of 17 children was created in a non-state medical facility in Trebon. The first research consisted of 48 children who were tested on vitamin D blood level and filled survey questionnaire. The second research consisted of 61 children who were tested on vitamin D blood level in a non-state medical facility. Some results of this study are contradictory because of inadequate methodology. Positive results have been shown with vitamin D supplementation, higher consumption of liver, eggs and daily intake of vegetable oils