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Erschienen in: European Journal of Nutrition 7/2014

01.10.2014 | Original Contribution

Three-month B vitamin supplementation in pre-school children affects folate status and homocysteine, but not cognitive performance

verfasst von: Astrid Rauh-Pfeiffer, Uschi Handel, Hans Demmelmair, Wolfgang Peissner, Mareile Niesser, Diego Moretti, Vanessa Martens, Sheila Wiseman, Judith Weichert, Moritz Heene, Markus Bühner, Berthold Koletzko

Erschienen in: European Journal of Nutrition | Ausgabe 7/2014

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Abstract

Background

Suboptimal vitamin B status might affect cognitive performance in early childhood. We tested the hypothesis that short-term supplementation with folic acid and selected B vitamins improves cognitive function in healthy children in a population with relatively low folate status.

Methods

We screened 1,002 kindergarten children for suboptimal folate status by assessing the total urinary para-aminobenzoylglutamate excretion. Two hundred and fifty low ranking subjects were recruited into a double blind, randomized, controlled trial to receive daily a sachet containing 220 μg folic acid, 1.1 mg vitamin B2, 0.73 mg B6, 1.2 μg B12 and 130 mg calcium, or calcium only for 3 months. Primary outcomes were changes in verbal IQ, short-term memory and processing speed between baseline and study end. Secondary outcomes were urinary markers of folate and vitamin B12 status, acetyl-para-aminobenzoylglutamate and methylmalonic acid, respectively, and, in a subgroup of 120 participants, blood folate and plasma homocysteine.

Results

Pre- and post-intervention cognitive measurements were completed by 115 children in the intervention and 122 in the control group. Compared to control, median blood folate increased by about 50 % (P for difference, P < 0.0001). Homocysteine decreased by 1.1 μmol/L compared to baseline, no change was seen in the control group (P for difference P < 0.0001) and acetyl-para-aminobenzoylglutamate was 4 nmol/mmol higher compared to control at the end of the intervention (P < 0.0001). We found no relevant differences between the groups for the cognitive measures.

Conclusion

Short-term improvement of folate and homocysteine status in healthy children does not appear to affect cognitive performance.
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Metadaten
Titel
Three-month B vitamin supplementation in pre-school children affects folate status and homocysteine, but not cognitive performance
verfasst von
Astrid Rauh-Pfeiffer
Uschi Handel
Hans Demmelmair
Wolfgang Peissner
Mareile Niesser
Diego Moretti
Vanessa Martens
Sheila Wiseman
Judith Weichert
Moritz Heene
Markus Bühner
Berthold Koletzko
Publikationsdatum
01.10.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Nutrition / Ausgabe 7/2014
Print ISSN: 1436-6207
Elektronische ISSN: 1436-6215
DOI
https://doi.org/10.1007/s00394-013-0647-y

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