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Matti Narkia

Benefits of Vitamin D Supplementation - Journal of American Physicians and Surgeons Vol... - 1 views

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    Benefits of Vitamin D Supplementation
    Joel M. Kauffman, Ph.D.
    Journal of American Physicians and Surgeons
    Volume 14 Number 2 - Summer 2009

    Clinical trials show that vitamin D supplementation at higher
    levels than previously recommended is beneficial for many
    conditions. It decreases the frequency of falls and fractures, helps
    prevent cardiovascular disease, and reduces symptoms of colds or
    influenza. Benefits are also seen in diabetes mellitus, multiple
    sclerosis, Crohn disease, pain, depression, and possibly autism.
    Sunlight does not cause an overdose of vitamin D production,
    and toxicity from supplementation is rare. Dose recommendations
    are increasing, but appear to be lagging the favorable trial results. A
    number of common drugs deplete vitamin D levels, and others may
    limit its biosynthesis from sunlight.
    People with adequate levels from sun exposure will not benefit
    from supplementation. While dietary intake is helpful,
    supplementation is better able to raise serum 25-hydroxyvitamin D ,
    the major circulating metabolite, to the level now thought adequate,
    30-50 ng/mL.
    Where there is inadequate daily sun exposure, oral doses of
    1,000-2,000 IU/d are now considered routine, with much higher
    doses (up to 50,000 IU) for rapid repletion now considered safe.
Matti Narkia

Vitamin D and mortality in older men and women. - Clin Endocrinol (Oxf). 2009 Nov;71(5)... - 0 views

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    Vitamin D and mortality in older men and women.
    Pilz S, Dobnig H, Nijpels G, Heine RJ, Stehouwer CD, Snijder MB, van Dam RM, Dekker JM.
    Clin Endocrinol (Oxf). 2009 Nov;71(5):666-72. Epub 2009 Feb 18.
    PMID: 19226272
    DOI: 10.1111/j.1365-2265.2009.03548.x

    Conclusions Low 25(OH)D levels are associated with all-cause mortality and even more pronounced with cardiovascular mortality, but it remains unclear whether vitamin D deficiency is a cause or a consequence of a poor health status. Therefore, intervention studies are warranted to evaluate whether vitamin D supplementation reduces mortality and cardiovascular diseases.
Matti Narkia

Low serum 25-hydroxyvitamin D concentrations are associated with greater all-cause mort... - 0 views

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    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 Shows Heart Benefits in Study - Well Blog - NYTimes.com - 0 views

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    "A new study suggests many Americans aren't getting anywhere nearly enough of the vitamin, and it may be affecting their heart health.

    In the study, researchers looked at tens of thousands of healthy adults 50 and older whose vitamin D levels had been measured during routine checkups. A majority, they found, were deficient in the vitamin. About two-thirds had less vitamin D in their bloodstreams than the authors considered healthy, and many were extremely deficient.

    Less than two years later, the researchers found, those who had extremely low levels of the vitamin were almost twice as likely to have died or suffered a stroke than those with adequate amounts. They also had more coronary artery disease and were twice as likely to have developed heart failure.

    The findings, which are being presented today at an American Heart Association conference in Orlando, don't prove that lack of vitamin D causes heart disease; they only suggest a link between the two. "
Matti Narkia

Arch Intern Med -- 25-Hydroxyvitamin D Levels and the Risk of Mortality in the General ... - 0 views

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    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

    Conclusion The lowest quartile of 25(OH)D level (<17.8 ng/mL) is independently associated with all-cause mortality in the general population.
Matti Narkia

Effect of four monthly oral vitamin D3 (cholecalciferol) supplementation on fractures a... - 1 views

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    Effect of four monthly oral vitamin D3 (cholecalciferol) supplementation on fractures and mortality in men and women living in the community: randomised double blind controlled trial.
    Trivedi DP, Doll R, Khaw KT.
    BMJ. 2003 Mar 1;326(7387):469.
    PMID: 12609940

    Conclusion: Four monthly supplementation with 100 000 IU oral vitamin D may prevent fractures without adverse effects in men and women living in the general community.
Matti Narkia

Prospective Study of Serum Vitamin D and Cancer Mortality in the United States -- Freed... - 0 views

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    Prospective study of serum vitamin D and cancer mortality in the United States.
    Freedman DM, Looker AC, Chang SC, Graubard BI.
    J Natl Cancer Inst. 2007 Nov 7;99(21):1594-602. Epub 2007 Oct 30.
    PMID: 17971526
    doi:10.1093/jnci/djm204

    CONCLUSIONS: Our results do not support an association between 25(OH)D and total cancer mortality, although there was an inverse relationship between 25(OH)D levels and colorectal cancer mortality.
Matti Narkia

A multicountry ecologic study of risk and risk reduction factors for prostate cancer mo... - 0 views

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    A multicountry ecologic study of risk and risk reduction factors for prostate cancer mortality.
    Grant WB.
    Eur Urol. 2004 Mar;45(3):271-9.
    PMID: 15036670

    CONCLUSIONS: These results are consistent with insulin-like growth factor-I (IGF-I), being an important risk factor for prostate cancer, with alcohol and calcium being less important risk factors, and with allium family vegetables, and, to a lesser extent, vitamin D being important risk reduction factors. These results should provide guidance for additional studies on dietary and environmental links to prostate cancer.
Matti Narkia

Seniors With Insufficient Levels Of Vitamin D At Increased Risk Of Dying From Heart Dis... - 0 views

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    A new study by researchers at the University of Colorado Denver and Massachusetts General Hospital (MGH) shows vitamin D plays a vital role in reducing the risk of death associated with older age. The research, just published in the Journal of the American Geriatrics Society, evaluated the association between vitamin D levels in the blood and the death rates of those 65 and older. The study found that older adults with insufficient levels of vitamin D die from heart disease at greater rates that those with adequate levels of the vitamin.
Matti Narkia

Prospective Study of Predictors of Vitamin D Status and Cancer Incidence and Mortality ... - 0 views

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    Prospective study of predictors of vitamin D status and cancer incidence and mortality in men.
    Giovannucci E, Liu Y, Rimm EB, Hollis BW, Fuchs CS, Stampfer MJ, Willett WC.
    J Natl Cancer Inst. 2006 Apr 5;98(7):451-9.
    PMID: 16595781
    doi:10.1093/jnci/djj101

    Conclusions: Low levels of vitamin D may be associated with increased cancer incidence and mortality in men, particularly for digestive-system cancers. The vitamin D supplementation necessary to achieve a 25(OH)D increment of 25 nmol/L may be at least 1500 IU/day.
Matti Narkia

Prospective Study of Serum 25-Hydroxyvitamin D Level, Cardiovascular Disease Mortality,... - 0 views

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    Prospective Study of Serum 25-Hydroxyvitamin D Level, Cardiovascular Disease Mortality, and All-Cause Mortality in Older U.S. Adults.
    Ginde AA, Scragg R, Schwartz RS, Camargo CA Jr.
    J Am Geriatr Soc. 2009 Jun 22. [Epub ahead of print]
    PMID: 19549021
    DOI: 10.1111/j.1532-5415.2009.02359.x

    CONCLUSION: In noninstitutionalized older adults, a group at high risk for all-cause mortality, serum 25(OH)D levels had an independent, inverse association with CVD and all-cause mortality. Randomized controlled trials of vitamin D supplementation in older adults are warranted to determine whether this association is causal and reversible.
Matti Narkia

Vitamin D Status and the Risk of Cardiovascular Disease Death -- Kilkkinen et al., 10.1... - 0 views

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    Vitamin D Status and the Risk of Cardiovascular Disease Death.
    Kilkkinen A, Knekt P, Aro A, Rissanen H, Marniemi J, Heliövaara M, Impivaara O, Reunanen A.
    Am J Epidemiol. 2009 Sep 17. [Epub ahead of print]
    PMID: 19762371
    doi:10.1093/aje/kwp227

    A low vitamin D level may be associated with higher risk of a fatal CVD event, particularly cerebrovascular death. These findings need to be replicated in other populations. To demonstrate a causal link between vitamin D and CVD, randomized controlled trials are required.
Matti Narkia

An estimate of cancer mortality rate reductions in Europe and the US with 1,000 IU of o... - 0 views

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    An estimate of cancer mortality rate reductions in Europe and the US with 1,000 IU of oral vitamin D per day.
    Grant WB, Garland CF, Gorham ED.
    Recent Results Cancer Res. 2007;174:225-34. Review.
    PMID: 17302200
Matti Narkia

D-vitamin minskar risken att dö i förtid | Inrikes | SvD - 0 views

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    Ät extra D-vitamin och förläng livet. Tillskott minskar risken för att dö i alla sjukdomar med åtta procent, visar en stor internationell studie. Ledande forskare efterlyser nu en internationell debatt om berikning av mat och en försiktig omvärdering av vår restriktiva syn på solbad.

    Det är forskare vid WHO:s internationella institut för cancerforskning i Lyon, IARC, som gått igenom 18 stora studier kring D-vitamin som publicerats fram till november 2006. Sammanlagt ingick 57311 personer som i genomsnitt följdes i nästan sex år. Under perioden avled 4777 av dem.

    När forskarnas slog ihop alla olika dödsorsaker upptäckte de att den totala dödligheten var åtta procent mindre bland dem som regelbundet åt extra D-vitamin. Tillskotten låg mellan 300 och 2000 internationella enheter, IU, men var i medeltal på en nivå som är normal i vanliga vitamintabletter, närmare bestämt 528 IU.
Matti Narkia

Association between serum 25(OH)D and death from prostate cancer - British Journal of C... - 0 views

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    Association between serum 25(OH)D and death from prostate cancer.
    Tretli S, Hernes E, Berg JP, Hestvik UE, Robsahm TE.
    Br J Cancer. 2009 Feb 10;100(3):450-4. Epub 2009 Jan 20.
    PMID: 19156140
    doi:10.1038/sj.bjc.6604865

    The serum level of 25(OH)D may be involved in disease progression and is a potential marker of prognosis in patients with prostate cancer.
Matti Narkia

Vitamin D Is Associated with Improved Survival in Early-Stage Non-Small Cell Lung Cance... - 0 views

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    Vitamin D is associated with improved survival in early-stage non-small cell lung cancer patients.
    Zhou W, Suk R, Liu G, Park S, Neuberg DS, Wain JC, Lynch TJ, Giovannucci E, Christiani DC.
    Cancer Epidemiol Biomarkers Prev. 2005 Oct;14(10):2303-9.
    PMID: 16214909

    In conclusion, the joint effects of surgery season and recent vitamin D intake seem to be associated with the survival of early-stage non-small cell lung cancer patients.
Matti Narkia

Prospective study of predictors of vitamin D status and survival in patients with color... - 0 views

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    Prospective study of predictors of vitamin D status and survival in patients with colorectal cancer
    K Ng, B M Wolpin, J A Meyerhardt, K Wu, A T Chan, B W Hollis, E L Giovannucci, M J Stampfer, W C Willett and C S Fuchs
    Br J Cancer 101: 916-923; advance online publication, August 18, 2009; doi:10.1038/sj.bjc.6605262
Matti Narkia

Prognostic Effects of 25-Hydroxyvitamin D Levels in Early Breast Cancer -- Goodwin et a... - 0 views

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    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

Epidemiology of Vitamin D Insufficiency and Cancer Mortality - Anticancer Research - 0 views

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    Epidemiology of vitamin D insufficiency and cancer mortality.
    Pilz S, Tomaschitz A, Obermayer-Pietsch B, Dobnig H, Pieber TR.
    Anticancer Res. 2009 Sep;29(9):3699-704. Review.
    PMID: 19667167

    In conclusion, we still need further studies to evaluate the association of vitamin D insufficiency and cancer incidence and mortality, but the multiple health benefits of vitamin D and the easy, safe and inexpensive way by which vitamin D can be supplemented should already guide current public health strategies to achieve 25(OH)D levels of at least 75 nmol/l (30 ng/ml) in the general population.
Matti Narkia

Circulating 25-Hydroxyvitamin D Levels and Survival in Patients With Colorectal Cancer ... - 0 views

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    Circulating 25-hydroxyvitamin d levels and survival in patients with colorectal cancer.
    Ng K, Meyerhardt JA, Wu K, Feskanich D, Hollis BW, Giovannucci EL, Fuchs CS.
    J Clin Oncol. 2008 Jun 20;26(18):2984-91.
    PMID: 18565885
    DOI: 10.1200/JCO.2007.15.1027

    Conclusion Among patients with colorectal cancer, higher prediagnosis plasma 25(OH)D levels were associated with a significant improvement in overall survival. Further study of the vitamin D pathway and its influence on colorectal carcinogenesis and cancer progression is warranted.
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