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Matti Narkia

Bread Fortified with Cholecalciferol Increases the Serum 25-Hydroxyvitamin D Concentrat... - 0 views

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    Bread fortified with cholecalciferol increases the serum 25-hydroxyvitamin D concentration in women as effectively as a cholecalciferol supplement.
    Natri AM, Salo P, Vikstedt T, Palssa A, Huttunen M, Kärkkäinen MU, Salovaara H, Piironen V, Jakobsen J, Lamberg-Allardt CJ.
    J Nutr. 2006 Jan;136(1):123-7.
    PMID: 16365070

    Both fortified breads increased serum 25-hydroxyvitamin D concentration as effectively as the cholecalciferol supplement. Supplementation or fortification did not affect serum intact parathyroid hormone concentration or urinary calcium excretion. In conclusion, fortified bread is a safe and feasible way to improve vitamin D nutrition.
Matti Narkia

A randomised comparison of increase in serum 25-hydroxyvitamin D concentratio... - 0 views

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    A randomised comparison of increase in serum 25-hydroxyvitamin D concentration after 4 weeks of daily oral intake of 10 microg cholecalciferol from multivitamin tablets or fish oil capsules in healthy young adults.
    Holvik K, Madar AA, Meyer HE, Lofthus CM, Stene LC.
    Br J Nutr. 2007 Sep;98(3):620-5. Epub 2007 Apr 24.
    PMID: 17456248

    We conclude that fish oil capsules and multivitamin tablets containing 10 microg cholecalciferol administered over a 4-week period produced a similar mean increase in s-25(OH)D concentration.
Matti Narkia

Vitamin D2 Is as Effective as Vitamin D3 in Maintaining Circulating Concentrations of 2... - 0 views

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    Vitamin D2 is as effective as vitamin D3 in maintaining circulating concentrations of 25-hydroxyvitamin D.
    Holick MF, Biancuzzo RM, Chen TC, Klein EK, Young A, Bibuld D, Reitz R, Salameh W, Ameri A, Tannenbaum AD.
    J Clin Endocrinol Metab. 2008 Mar;93(3):677-81. Epub 2007 Dec 18.
    PMID: 18089691

    Conclusion: A 1000 IU dose of vitamin D2 daily was as effective as 1000 IU vitamin D3 in maintaining serum 25-hydroxyvitamin D levels and did not negatively influence serum 25-hydroxyvitamin D3 levels. Therefore, vitamin D2 is equally as effective as vitamin D3 in maintaining 25-hydroxyvitamin D status.
Matti Narkia

Evidence that vitamin D3 increases serum 25-hydroxyvitamin D more efficiently than does... - 0 views

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    Evidence that vitamin D3 increases serum 25-hydroxyvitamin D more efficiently than does vitamin D2.
    Trang HM, Cole DE, Rubin LA, Pierratos A, Siu S, Vieth R.
    Am J Clin Nutr. 1998 Oct;68(4):854-8.
    PMID: 9771862

    Although the 1.7-times
    greater efficacy for vitamin D3 shown here may seem small, it is
    more than what others have shown for 25(OH)D increases when
    comparing 2-fold differences in vitamin D3 dose. The
    assumption that vitamins D2 and D3 have equal nutritional value
    is probably wrong and should be reconsidered.
Matti Narkia

Vitamin D2 Is Much Less Effective than Vitamin D3 in Humans -- Armas et al. 89 (11): 53... - 0 views

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    Vitamin D2 is much less effective than vitamin D3 in humans.
    Armas LA, Hollis BW, Heaney RP.
    J Clin Endocrinol Metab. 2004 Nov;89(11):5387-91.
    PMID: 15531486

    Vitamin D2 potency is less than one third that of vitamin D3. Physicians resorting to use of vitamin D2 should be aware of its markedly lower potency and shorter duration of action relative to vitamin D3.
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