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Matti Narkia

Serum 25-Hydroxyvitamin D Levels Among US Children Aged 1 to 11 Years: Do Children Need... - 0 views

    Serum 25-Hydroxyvitamin D Levels Among US Children Aged 1 to 11 Years: Do Children Need More Vitamin D?
    Mansbach JM, Ginde AA, Camargo CA Jr.
    Pediatrics. 2009 Nov;124(5):1404-1410.
    PMID: 19951983

    CONCLUSIONS: On the basis of a nationally representative sample of US children aged 1 to 11 years, millions of children may have suboptimal levels of 25(OH)D, especially non-Hispanic black and Hispanic children. More data in children are needed not only to understand better the health implications of specific serum levels of 25(OH)D but also to determine the appropriate vitamin D supplement requirements for children.
Matti Narkia

Vitamin D Shows Heart Benefits in Study - Well Blog - - 0 views

    "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

Prevalence of low serum vitamin D concentration in an urban population of elderly women... - 0 views

    Prevalence of low serum vitamin D concentration in an urban population of elderly women in Poland.
    Napiórkowska L, Budlewski T, Jakubas-Kwiatkowska W, Hamzy V, Gozdowski D, Franek E.
    Pol Arch Med Wewn. 2009 Nov;119(11):699-703.
    PMID: 19920793

    CONCLUSIONS: The prevalence of low vitamin D concentrations in an urban population of elderly women in Poland is very high. Lower vitamin D levels are associated with a higher PTH concentration
Matti Narkia

Plasma calcidiol, season, and serum parathyroid hormone concentrations in healthy elder... - 0 views

    Plasma calcidiol, season, and serum parathyroid hormone concentrations in healthy elderly men and women.
    Dawson-Hughes B, Harris SS, Dallal GE.
    Am J Clin Nutr. 1997 Jan;65(1):67-71.
    PMID: 8988915

    Plasma calcidiol and serum PTH concentrations were inversely related, with PTH rising slowly as calcidiol concentrations declined below 110 nmol/L (95 CI: 60, 168 nmol/L). More than 90% of the men and women had calcidiol concentrations below this value in the wintertime. The high prevalence of lower wintertime calcidiol values may increase risk of bone loss in elderly men and women.
Matti Narkia

Low Vitamin D Status despite Abundant Sun Exposure -- Binkley et al. 92 (6): 2130 -- Jo... - 0 views

    Low vitamin D status despite abundant sun exposure.
    Binkley N, Novotny R, Krueger D, Kawahara T, Daida YG, Lensmeyer G, Hollis BW, Drezner MK.
    J Clin Endocrinol Metab. 2007 Jun;92(6):2130-5. Epub 2007 Apr 10.
    PMID: 17426097

    CONCLUSIONS: These data suggest that variable responsiveness to UVB radiation is evident among individuals, causing some to have low vitamin D status despite abundant sun exposure. In addition, because the maximal 25(OH)D concentration produced by natural UV exposure appears to be approximately 60 ng/ml, it seems prudent to use this value as an upper limit when prescribing vitamin D supplementation.
Matti Narkia

Prevalence of Vitamin D Insufficiency in Patients With Parkinson Disease and Alzheimer ... - 0 views

    Prevalence of vitamin d insufficiency in patients with Parkinson disease and Alzheimer disease.\nEvatt ML, Delong MR, Khazai N, Rosen A, Triche S, Tangpricha V.\nArch Neurol. 2008 Oct;65(10):1348-52.\nPMID: 18852350
Matti Narkia

Low vitamin D may be a bigger problem than thought - 0 views

    Many U.S. teenagers -- including half of African Americans -- would be considered vitamin D-deficient if the definition of deficiency were changed to what many experts recommend, a new study finds.

    Right now, people are considered to have an overt deficiency in vitamin D when blood levels drop below 11 nanograms per milliliter (ng/mL), but there is debate over how the optimal vitamin D level should be define
Matti Narkia

Not enough vitamin D: health consequences for Canadians. - Can Fam Physician. 2007 May - 0 views

    Not enough vitamin D: health consequences for Canadians.\nSchwalfenberg G.\nCan Fam Physician. 2007 May;53(5):841-54. Review.\nPMID: 17872747 \n
Matti Narkia

Demographic Differences and Trends of Vitamin D Insufficiency in the US Population, 198... - 0 views

    Demographic differences and trends of vitamin D insufficiency in the US population, 1988-2004.
    Ginde AA, Liu MC, Camargo CA Jr.
    Arch Intern Med. 2009 Mar 23;169(6):626-32.
    PMID: 19307527

    Conclusions National data demonstrate a marked decrease in serum 25(OH)D levels from the 1988-1994 to the 2001-2004 NHANES data collections. Racial/ethnic differences have persisted and may have important implications for known health disparities. Current recommendations for vitamin D supplementation are inadequate to address the growing epidemic of vitamin D insufficiency.
Matti Narkia

Mean Serum 25(OH)D Levels Decreasing in All Categories of the US Population - 0 views

    March 27, 2009 - A significant decrease in serum 25-hydroxyvitamin D (25[OH]D) levels has led to an increase in vitamin D insufficiency in the US population, especially in racial and ethnic groups, according to results of a population-based study reported in the March 23 issue of the Archives of Internal Medicine.

    "Vitamin D insufficiency has been associated with increases in cardiovascular disease, cancer, and infection," write Adit A. Ginde, MD, from the Department of Emergency Medicine at the University of Colorado Denver School of Medicine, Aurora, Colorado, and colleagues. "Vitamin D supplementation appears to mitigate the incidence and adverse outcomes of these diseases and may reduce all-cause mortality."


    "These findings have important implications for health disparities and public health," the study authors conclude. "Our data provide additional evidence that current recommendations for vitamin D supplementation (200-600 IU/d) are inadequate to achieve optimal serum 25(OH)D levels in most of the US population." They add that large, randomized controlled trials of higher doses of vitamin D supplementation are needed to evaluate their effect on general health and mortality.
Matti Narkia

Millions Of U.S. Children Low In Vitamin D - 0 views

    ScienceDaily (Aug. 3, 2009) - Seven out of ten U.S. children have low levels of vitamin D, raising their risk of bone and heart disease, according to a study of over 6,000 children by researchers at Albert Einstein College of Medicine of Yeshiva University. The striking findings suggest that vitamin D deficiency could place millions of children at risk for high blood pressure and other risk factors for heart disease.
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