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1025 The Assessement of the Vitamin D Supply in Polish Children at the Age of 9–12 Years - Multicentre Research
  1. D Chlebna-Sokol1,
  2. J Golec2,
  3. J Karalus2,
  4. ZP Halaba3,
  5. E Karczmarewicz4,
  6. J Konstantynowicz5,
  7. B Kulik-Rechberger6,
  8. M Niedziela7,
  9. A Dobrzańska4
  1. 1Propedeutic Paediatrics and Bone Metabolic Diseases
  2. 2Medical University of Lodz, Lodz
  3. 3Medical University of Silesia, Katowice
  4. 4The Children’s Memorial Health Institute in Warsow, Warsow
  5. 5University of Bialystok, Bialystok
  6. 6University of Lublin, Lublin
  7. 7University of Poznan, Poznan, Poland


Introduction It is universally known that the systemic deficiency of vitamin D may hamper the correct peak bone mass acquistion.

Aim The aim of the study was to determine the vitamin D supply in schoolchildren in Poland.

Patients and methods The study comprised 6 research centers from Poland. The healthy schoolchildren at the age of 9–11.99 were examined. In every child the liver metabolite of vitamin D was detected twice: after the winter and summer. The serum was analysed with the immunochemiluminescence method. The sufficient 25 OHD serum concentration was recognized at range of 20–100 ng/ml.

Results The 715 of children were examined. The greatest vitamin D shortages were observed in Szczecin and Białystok – in 95% and in 90% children. In Katowice and Lublin the lower concentration was detected in 89% and 88% of children and in Łódz´ and Poznań in 77% and 74%. The results of the 25OHD improved considerably after the summer. The greatest shortages were obtained in Poznań and Szczecin – in 52.9% and 42.1%. In Łódz´ the decreased concentration was observed in 41.5% of children. The lowest shortages were revealed in Lublin, Białystok and Katowice- in 28%, 26.3% and 26.3%.


  1. The lower concentration of vitamin D in as many children indicates on adverse diet and climatic conditions.

  2. The results of this study confirm the neccesity of the prophylaxis of vitamin D deficiency in schoolchildren in Poland.

  3. The considerable improvement of the 25OHD serum concentration after the summer may provide favourable influence of the sunlight.

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