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Matti Narkia

An international comparison of serum 25-hydroxyvitamin D measurements. - Osteoporos Int. 1999;9(5):394-7. - SpringerLink - Journal Article - 0 views

www.springerlink.com/...1qp2hv1w6fqxu8ce

1999 April study research international comparison 25ohd measurements assays Lips Holick vitamin_D nutrition lab labs medline

shared by Matti Narkia on 22 Sep 09 - Cached
  • Matti Narkia on 22 Sep 09
     
    An international comparison of serum 25-hydroxyvitamin D measurements. Lips P, Chapuy MC, Dawson-Hughes B, Pols HA, Holick MF. Osteoporos Int. 1999;9(5):394-7. PMID: 10550457 DOI: 10.1007/s001980050162 The results show that 25(OH)D values from different laboratories can not be assumed to be comparable unless a careful cross-calibration has been performed.
Matti Narkia

Association between depressive symptoms and 25-hydroxyvitamin D in middle-aged and elderly Chinese. - ScienceDirect - Journal of Affective Disorders : - 0 views

www.sciencedirect.com/science

2009 February study research epidemiological humans vitamin D vitamin_D SAD seasonal_affective_disorder mood disorders disorder mood_disorders depression sunlight nutrition 25ohd calcidiol deficiency China cross-sectional

shared by Matti Narkia on 25 Aug 09 - Cached
  • Matti Narkia on 25 Aug 09
     
    Association between depressive symptoms and 25-hydroxyvitamin D in middle-aged and elderly Chinese. Pan A, Lu L, Franco OH, Yu Z, Li H, Lin X. J Affect Disord. 2009 Feb 25. [Epub ahead of print] PMID: 19249103 doi:10.1016/j.jad.2009.02.002    
Matti Narkia

A randomised comparison of increase in serum 25-hydroxyvitamin D concentration after 4 weeks of daily oral intake of 10 μg cholecalciferol from multivitamin tablets or fish oil capsules in healthy young adults - 0 views

journals.cambridge.org/...displayFulltext

2007 September bjcn study research clinical_trial rct vitamin_D vitamin_D3 multivitamin tablets fish oil capsules oil-based absorption nutrition medline comparison 25ohd increase vs. versus

shared by Matti Narkia on 19 Dec 09 - Cached
  • Matti Narkia on 19 Dec 09
     
    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

Arch Gen Psychiatry -- Depression Is Associated With Decreased 25-Hydroxyvitamin D and Increased Parathyroid Hormone Levels in Older Adults, May 2008, Hoogendijk et al. 65 (5): 508 - 0 views

archpsyc.ama-assn.org/...508

2008 May archpsyc study research epidemiological humans elderly old older vitamin_D depression 250hd deficiency low_levels nutrition medline severity PTH adults

shared by Matti Narkia on 29 Nov 09 - Cached
  • Matti Narkia on 29 Nov 09
     
    Depression is associated with decreased 25-hydroxyvitamin D and increased parathyroid hormone levels in older adults. Hoogendijk WJ, Lips P, Dik MG, Deeg DJ, Beekman AT, Penninx BW. Arch Gen Psychiatry. 2008 May;65(5):508-12. PMID: 18458202 Conclusion The results of this large population-based study show an association of depression status and severity with decreased serum 25(OH)D levels and increased serum PTH levels in older individuals.
Matti Narkia

Association between depressive symptoms and 25-hydroxyvitamin D in middle-aged and elderly Chinese - 0 views

www.jad-journal.com/...abstract

2009 November study research epidemiological cross-sectional humans middle-aged middle-age elderly old older Chinese China vitamin_D 25ohd depression nutrition medline symptoms

shared by Matti Narkia on 29 Nov 09 - Cached
  • Matti Narkia on 29 Nov 09
     
    Association between depressive symptoms and 25-hydroxyvitamin D in middle-aged and elderly Chinese. Pan A, Lu L, Franco OH, Yu Z, Li H, Lin X. J Affect Disord. 2009 Nov;118(1-3):240-3. Epub 2009 Feb 27. PMID: 19249103 doi:10.1016/j.jad.2009.02.002 Conclusions Depressive symptoms are not associated with 25(OH)D concentrations in middle-aged and elderly Chinese. Further prospective studies are required to determine whether they are correlated.
Matti Narkia

Low serum 25-hydroxyvitamin D concentrations are associated with greater all-cause mortality in older community-dwelling women - 0 views

www.nrjournal.com/...abstract

2009 August nrjournal study research epidemiological humans women older old elderly vitamin_D 25ohd low_levels aging mortality all-cause all-causes survival nutrition medline community-dwelling

shared by Matti Narkia on 02 Dec 09 - Cached
  • Matti Narkia on 02 Dec 09
     
    Low serum 25-hydroxyvitamin D concentrations are associated with greater all-cause mortality in older community-dwelling women. Semba RD, Houston DK, Ferrucci L, Cappola AR, Sun K, Guralnik JM, Fried LP. Nutr Res. 2009 Aug;29(8):525-30. PMID: 19761886 doi:10.1016/j.nutres.2009.07.007 Older community-dwelling women with low 25(OH)D levels are at an increased risk of death.
Matti Narkia

Vitamin D supplementation, 25-hydroxyvitamin D concentrations, and safety -- Vieth 69 (5): 842 -- American Journal of Clinical Nutrition - 0 views

www.ajcn.org/...842

1999 May ajcn Calciferol calcidiol cholecalciferol calcitriol 25-hydroxyvitaminD 1 25-dihydroxyvitaminD toxicity safety nutrition UVB hyperparathyroidism osteomalacia DRI 25ohd NOAEL LOAEL Vieth review medline study peer-reviewed vitamin_D

shared by Matti Narkia on 25 Aug 09 - Cached
  • Matti Narkia on 25 Aug 09
     
    Vieth R.Vitamin D supplementation, 25-hydroxyvitamin D concentrations, andsafety.Am J Clin Nutr. 1999 May;69(5):842-56. Review.PMID: 10232622
Matti Narkia

Association of low 25-hydroxyvitamin D concentrations with elevated parathyroid hormone concentrations and low cortical bone density in early pubertal and prepubertal Finnish girls -- Cheng et al. 78 (3): 485 -- American Journal of Clinical Nutrition - 0 views

www.ajcn.org/...485

2003 September ajcn study research epidemiological humans young girls Finnish Finland vitamin_D status 25ohd deficiency prevalence PTH BMD nutrition bone mass density cortical Lamberg-Allardt Cheng calcium intake secondary hyperparathyroidism iPTH medline

shared by Matti Narkia on 22 Sep 09 - Cached
  • Matti Narkia on 22 Sep 09
     
    Association of low 25-hydroxyvitamin D concentrations with elevated parathyroid hormone concentrations and low cortical bone density in early pubertal and prepubertal Finnish girls. Cheng S, Tylavsky F, Kröger H, Kärkkäinen M, Lyytikäinen A, Koistinen A, Mahonen A, Alen M, Halleen J, Väänänen K, Lamberg-Allardt C. Am J Clin Nutr. 2003 Sep;78(3):485-92. Erratum in: Am J Clin Nutr. 2006 Jan;83(1):174. PMID: 12936933 CONCLUSIONS: Vitamin D-deficient girls have low cortical BMD and high iPTH concentrations, which are consistent with secondary hyperparathyroidism. A low vitamin D concentration accompanied by high bone resorption (TRAP 5b) may limit the accretion of bone mass in young girls.
Matti Narkia

Supplements of 20 microg/d cholecalciferol optimized serum 25-hydroxyvitamin D concentrations in 80% of premenopausal women in winter. J Nutr. 2009 Mar - 0 views

jn.nutrition.org/...540

2009 March jn study research clinical_trial rct humans women vitamin D vitamin_D supplementation supplements 25OHD calcidiol optimizing level levels nutrition medline winter supplemental

shared by Matti Narkia on 25 Aug 09 - Cached
  • Matti Narkia on 25 Aug 09
     
    Supplements of 20 microg/d cholecalciferol optimized serum 25-hydroxyvitamin D concentrations in 80% of premenopausal women in winter.\nNelson ML, Blum JM, Hollis BW, Rosen C, Sullivan SS.\nJ Nutr. 2009 Mar;139(3):540-6. Epub 2009 Jan 21.\nPMID: 19158226
Matti Narkia

Effects of Above Average Summer Sun Exposure on Serum 25-Hydroxyvitamin D and Calcium Absorption -- Barger-Lux and Heaney 87 (11): 4952 -- Journal of Clinical Endocrinology & Metabolism - 0 views

jcem.endojournals.org/...4952

2002 25-hydroxyvitamind 25-hydroxycholecalciferol 25(oh)d Heaney above average summer sun exposure uvb medline study science peer-reviewed sunshine imported delicious vitamin_D

shared by Matti Narkia on 25 Aug 09 - Cached
  • Matti Narkia on 25 Aug 09
     
    Barger-Lux MJ, Heaney RP. Effects of above average summer sun exposure on serum 25-hydroxyvitamin D and calcium absorption.J Clin Endocrinol Metab. 2002 Nov;87(11):4952-6.PMID: 12414856 [PubMed - indexed for MEDLINE]
Matti Narkia

A nested case control study of plasma 25-hydroxyvitamin D concentrations and risk of colorectal cancer. - J Natl Cancer Inst. 2007 Jul 18 - 0 views

jnci.oxfordjournals.org/...1120

2007 July jnci study research epidemiological humans vitamin D vitamin_D status levels 25ohd calcidiol Willett Giovannucci Hollis colorectal cancer colorectal_cancer colon colon_cancer risk nutrition medline

shared by Matti Narkia on 25 Aug 09 - Cached
  • Matti Narkia on 25 Aug 09
     
    A nested case control study of plasma 25-hydroxyvitamin D concentrations and risk of colorectal cancer. Wu K, Feskanich D, Fuchs CS, Willett WC, Hollis BW, Giovannucci EL. J Natl Cancer Inst. 2007 Jul 18;99(14):1120-9. Epub 2007 Jul 10. PMID: 17623801
Matti Narkia

Vitamin D requirements: current and future -- Weaver and Fleet 80 (6): 1735S -- American Journal of Clinical Nutrition - 0 views

www.ajcn.org/...1735S

2004 December ajcn study review humans vitamin_D requirements UL recommendation nutrition medline 25ohd

shared by Matti Narkia on 25 Aug 09 - Cached
  • Matti Narkia on 25 Aug 09
     
    Upper levels of vitamin D intake were set at 50 microg/d (2000 IU/d) for all ages. Some individuals would require higher levels than these to achieve serum 25-hydroxyvitamin D concentrations for optimal calcium absorption. So much new information on vitamin D and health has been collected since the requirements were set in 1997 that this nutrient is likely the most in need of revised requirements. Vitamin D requirements: current and future. Weaver CM, Fleet JC. Am J Clin Nutr. 2004 Dec;80(6 Suppl):1735S-9S. Review. Erratum in: Am J Clin Nutr. 2005 Mar;81(3):729. PMID: 15585797
Matti Narkia

Hypovitaminosis D in an Italian population of healthy subjects and hospitalized patients. - Br J Nutr. 1999 Feb;81(2):133-7. (free full text PDF available) - 0 views

journals.cambridge.org/...displayAbstract

1999 study bjn research epidemiological humans healthy subjects hospitalized patients inpatients Italian Italy vitamin_D status deficiency prevalence 25ohd nutrition medline

shared by Matti Narkia on 08 Dec 09 - Cached
  • Matti Narkia on 08 Dec 09
     
    Hypovitaminosis D in an Italian population of healthy subjects and hospitalized patients. Romagnoli E, Caravella P, Scarnecchia L, Martinez P, Minisola S. Br J Nutr. 1999 Feb;81(2):133-7. PMID: 10450331 The results of the present study emphasize the importance of 25-hydroxyvitamin D measurement, and the need to increase vitamin D intake in Italy; foodstuff fortification and supplement use must be considered in order to prevent negative effects of vitamin D deficiency on skeletal integrity. All hospitalized patients, both in summer and in winter, are characterized by the highest prevalence of hypovitaminosis D, especially the older patients. Medical inpatients may be at risk for vitamin D deficiency,
Matti Narkia

Prostate cancer risk and prediagnostic serum 25-hydroxyvitamin D levels (Finland). - Cancer Causes Control. 2000 Oct;11(9):847-52. - SpringerLink - Journal Article - 0 views

www.springerlink.com/...q21g2w2283m8783v

2000 October study research epidemiological humans men prostate cancer prostate_cancer PCa prediagnostic vitamin_D status levels 25ohd nutrition Ahonen Tuohimaa medline Finland andropause

shared by Matti Narkia on 22 Sep 09 - Cached
  • Matti Narkia on 22 Sep 09
     
    Prostate cancer risk and prediagnostic serum 25-hydroxyvitamin D levels (Finland). Ahonen MH, Tenkanen L, Teppo L, Hakama M, Tuohimaa P. Cancer Causes Control. 2000 Oct;11(9):847-52. PMID: 11075874 DOI: 10.1023/A:1008923802001 CONCLUSIONS: We conclude that low levels of 25-VD associated with an increased risk for subsequent earlier exposure and more aggressive development of prostate cancer, especially before the andropause.
Matti Narkia

25-Hydroxyvitamin D Levels and the Risk of Mortality in the General Population, Aug 11/25, 2008, Melamed et al. 168 (15): 1629 - Arch Intern Med -- Abstract - 0 views

archinte.ama-assn.org/...1629

2008 August study research epidemiological humans vitamin D vitamin_D status 25ohd calcidiol all-cause mortality all-cause_mortality medline nutrition

shared by Matti Narkia on 25 Aug 09 - Cached
  • Matti Narkia on 25 Aug 09
     
    25-hydroxyvitamin D levels and the risk of mortality in the general population. Melamed ML, Michos ED, Post W, Astor B. Arch Intern Med. 2008 Aug 11;168(15):1629-37. PMID: 18695076
Matti Narkia

Prognostic Effects of 25-Hydroxyvitamin D Levels in Early Breast Cancer -- Goodwin et al. 27 (23): 3757 -- Journal of Clinical Oncology - 0 views

jco.ascopubs.org/...3757

2009 August study research epidemiological humans women patients breast cancer breast_cancer vitamin_D status 25ohd deficiency prognostic effects prognosis mortality nutrition medline

shared by Matti Narkia on 10 Sep 09 - Cached
  • Matti Narkia on 10 Sep 09
     
    Prognostic effects of 25-hydroxyvitamin D levels in early breast cancer. Goodwin PJ, Ennis M, Pritchard KI, Koo J, Hood N. J Clin Oncol. 2009 Aug 10;27(23):3757-63. Epub 2009 May 18. PMID: 19451439 DOI: 10.1200/JCO.2008.20.0725 Conclusion Vitamin D deficiency may be associated with poor outcomes in breast cancer.
Matti Narkia

Vitamin D3 and 25-hydroxyvitamin D3 in raw and cooked pork cuts - ScienceDirect - Journal of Food Composition and Analysis : - 0 views

www.sciencedirect.com/science

2003 October study research in_vitro vitamin_D vitamin_D3 25ohd calcidiol content raw cooked pork cuts meat nutrition food

shared by Matti Narkia on 08 Dec 09 - Cached
  • Matti Narkia on 08 Dec 09
     
    Vitamin D3 and 25-hydroxyvitamin D3 in raw and cooked pork cuts. Ina Clausen, Jette Jakobsen, Torben Leth and Lars Ovesen. Journal of Food Composition and Analysis Volume 16, Issue 5, October 2003, Pages 575-585 doi:10.1016/S0889-1575(03)00064-4 Meat 25OHD3 contributes significantly to vitamin D activity. Food databases should include concentrations of both vitamin D and 25OHD.
Matti Narkia

Lack of Association between Serum Levels of 25-Hydroxyvitamin D and the Subsequent Risk of Prostate Cancer in Finnish Men - Cancer Epidemiology, Biomarkers & Prevention - 0 views

cebp.aacrjournals.org/...2784.long

2007 December cebp Faupel-Badger study research epidemiological humans Finnish SETTI ATBC vitamin_D 25ohd prostate cancer prostate_cancer PCa risk U-shaped nutrition U-shape Finland Nordic medline

shared by Matti Narkia on 15 Dec 09 - Cached
  • Matti Narkia on 15 Dec 09
     
    Lack of association between serum levels of 25-hydroxyvitamin D and the subsequent risk of prostate cancer in Finnish men. Faupel-Badger JM, Diaw L, Albanes D, Virtamo J, Woodson K, Tangrea JA. Cancer Epidemiol Biomarkers Prev. 2007 Dec;16(12):2784-6. PMID: 18086789 doi: 10.1158/1055-9965.EPI-07-0672
Matti Narkia

Fall prevention with supplemental and active forms of vitamin D: a meta-analysis of randomised controlled trials -- Bischoff-Ferrari et al. 339: b3692 -- BMJ - 0 views

www.bmj.com/...b3692

2009 October BMJ study review meta-analysis clinical_trials rcts humans elderly old older fall falls prevention vitamin_D supplementation nutrition Bischoff-Ferrari medline 25ohd 1.25(OH)2D calcitriol

shared by Matti Narkia on 05 Oct 09 - Cached
  • Matti Narkia on 05 Oct 09
     
    Fall prevention with supplemental and active forms of vitamin D: a meta-analysis of randomised controlled trials. Bischoff-Ferrari HA, Dawson-Hughes B, Staehelin HB, Orav JE, Stuck AE, Theiler R, Wong JB, Egli A, Kiel DP, Henschkowski J. BMJ. 2009 Oct 1;339:b3692. doi: 10.1136/bmj.b3692. PMID: 19797342 doi: 10.1136/bmj.b3692 Conclusions Supplemental vitamin D in a dose of 700-1000 IU a day reduced the risk of falling among older individuals by 19% and to a similar degree as active forms of vitamin D. Doses of supplemental vitamin D of less than 700 IU or serum 25-hydroxyvitamin D concentrations of less than 60 nmol/l may not reduce the risk of falling among older individuals.
Matti Narkia

Serum 25-Hydroxyvitamin D Concentration and Cognitive Impairment. - J Geriatr Psychiatry Neurol. 2009 Feb - 0 views

jgp.sagepub.com/...0891988708327888v2

2009 February study research epidemiological humans elderly older old aging vitamin D vitamin_D levels status low_levels dementia risk UK Cambridge nutrition cognitive_impairment cognitive impairment cognition 25ohd calcidiol

shared by Matti Narkia on 25 Aug 09 - Cached
  • Matti Narkia on 25 Aug 09
     
    Serum 25-Hydroxyvitamin D Concentration and Cognitive Impairment.\nLlewellyn DJ, Langa K, Lang I.\nJ Geriatr Psychiatry Neurol. 2009 Feb 4. [Epub ahead of print]\nPMID: 19073839 \ndoi:10.1177/0891988708327888\n
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