Brekhoff, L. (Lisanne) (2013) Invloed van voeding en vitamine D-supplementen op de serum 25-hydroxyvitamine D concentratie bij kinderen tussen oktober en april. thesis, Medicine.
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Abstract
Introduction: Because of the limited vitamin D synthesis in the skin in the Netherlands between October and April, this study investigated the influence of food (butter, milk and fish) and vitamin D supplements on the serum 25-hydroxyvitamin D (25(OH)D) concentration in this period, and during the whole year. Material and methods: There were 382 children aged between 1 and 18 years enrolled. Using a questionnaire, information was collected on the intake and synthesis of vitamin D. The children were divided into three age groups: preschoolers (1-4 years), school-aged children (4-13 years) and adolescents (≥ 13 years). Results: In all participants, sunlight (p = 0,000), vitamin D supplements (p = 0,000) and food (p = 0,000) had a significant influence on the serum 25(OH)D concentration. The type of food that had the greatest influence was the residual group, which consisted for example of toddler milk, soy milk, buttermilk, follow-on milk and yoghurt. In school-aged children, sunlight (p = 0,000) and vitamin D supplements (p = 0,008) had a significant influence. Between October and April, food (p = 0,004) had a significant influence on the serum 25(OH)D concentration in all participants, and in school-aged children, fish intake (p = 0,002) had a significant influence. 51,1% of all participants had vitamin D deficiency (VDD) between October and April. Conclusion: Between October and April, food has a significant influence on the serum 25(OH)D concentration. There is a positive trend between whole milk and the residual group, for example of toddler milk, soy milk, buttermilk, follow-on milk and yoghurt, and the serum 25(OH)D concentration, but this trend was not significant. Because many school-aged children and adolescents have VDD, there should be guidelines for good nutrition and vitamin D supplementation.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Gaag, Mevr. E. van der |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 11:05 |
| Last Modified: | 25 Jun 2020 11:05 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/2481 |
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