Skip to main content

Home/ Nutrition/ Group items tagged insufficiency

Rss Feed Group items tagged

Matti Narkia

The High Prevalence of Vitamin D Insufficiency across Australian Populations Is Only Pa... - 1 views

  •  
    The high prevalence of vitamin D insufficiency across Australian populations is only partly explained by season and latitude.
    van der Mei IA, Ponsonby AL, Engelsen O, Pasco JA, McGrath JJ, Eyles DW, Blizzard L, Dwyer T, Lucas R, Jones G.
    Environ Health Perspect. 2007 Aug;115(8):1132-9.
    PMID: 17687438
    doi: 10.1289/ehp.9937.

    Conclusion
    Vitamin D insufficiency is common over a wide latitude range in Australia. Season appears to be more important than latitude, but both accounted for less than one-fifth of the variation in serum 25(OH)D levels, highlighting the importance of behavioral factors. Current sun exposure guidelines do not seem to fully prevent vitamin D insufficiency, and consideration should be given to their modification or to pursuing other means to achieve vitamin D adequacy.
Matti Narkia

Hypovitaminosis D - Wikipedia, the free encyclopedia - 0 views

  •  
    "Hypovitaminosis D is a deficiency of Vitamin D. It can result from: inadequate intake coupled with inadequate sunlight exposure (in particular sunlight with adequate ultra violet B rays), disorders that limit its absorption, conditions that impair conversion of vitamin D into active metabolites, such as liver or kidney disorders, or, rarely, by a number of hereditary disorders.[1] Deficiency results in impaired bone mineralization, and leads to bone softening diseases, rickets in children and osteomalacia in adults, and contributes to osteoporosis.[1] Osteomalacia may also occur rarely as a side-effect of phenytoin use

    Hypovitaminosis D is typically diagnosed by measuring the concentration in blood of the compound 25-hydroxyvitamin D (calcidiol), which is a precursor to the active form 1,25-dihydroxyvitamin D (calcitriol).[6] One recent review has proposed the following four categories for hypovitaminosis D:[7]

    * Insufficient 50-100 nmol/L (20-40 ng/mL)
    * Mild 25-50 nmol/L (10-20 ng/mL)
    * Moderate 12.5-25.0 nmol/L (5-10 ng/mL)
    * Severe < 12.5 nmol/L (< 5 ng/mL)

    Note that 1.0 nmol/L = 0.4 ng/mL for this compound.[8] Other authors have suggested that a 25-hydroxyvitamin D level of 75-80 nmol/L (30-32 ng/mL) may be sufficient
Matti Narkia

Serum 25-hydroxyvitamin D levels in vitamin D-insufficient hip fracture patients after ... - 0 views

  •  
    Serum 25-hydroxyvitamin D levels in vitamin D-insufficient hip fracture patients after supplementation with ergocalciferol and cholecalciferol.
    Glendenning P, Chew GT, Seymour HM, Gillett MJ, Goldswain PR, Inderjeeth CA, Vasikaran SD, Taranto M, Musk AA, Fraser WD.
    Bone. 2009 Nov;45(5):870-5. Epub 2009 Jul 23.
    PMID: 19631774
    doi:10.1016/j.bone.2009.07.015

    Cholecalciferol supplementation resulted in a 31% greater increase in total HPLC-measured 25OHD (p=0.010) and 52% greater rise in RIA-measured 25OHD (p<0.001) of supplementation dose with than ergocalciferol equivalent an>0.05). In vitamin D-insufficient hip fracture patients, supplementation with cholecalciferol 1000 IU/day for three months was more effective in increasing serum 25OHD than an equivalent dose of ergocalciferol. However, the lack of difference in PTH lowering between calciferol treatments raises questions about the biological importance of this observation.
Matti Narkia

Calcium, Vitamin D and Cancer - Anticancer Research - 0 views

  •  
    Calcium, vitamin D and cancer.
    Peterlik M, Grant WB, Cross HS.
    Anticancer Res. 2009 Sep;29(9):3687-98. Review.
    PMID: 19667166
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

Vitamin D fortification as public health policy: significant improvement in vitamin D s... - 0 views

  •  
    Vitamin D fortification as public health policy: significant improvement in vitamin D status in young Finnish men.
    Laaksi IT, Ruohola JP, Ylikomi TJ, Auvinen A, Haataja RI, Pihlajamäki HK, Tuohimaa PJ.
    Eur J Clin Nutr. 2006 Aug;60(8):1035-8. Epub 2006 Feb 15.
    PMID: 16482069
Matti Narkia

Prevalence of vitamin D insufficiency in an adult normal population. - [Osteoporos Int.... - 0 views

  •  
    Prevalence of vitamin D insufficiency in an adult normal population.
    Chapuy MC, Preziosi P, Maamer M, Arnaud S, Galan P, Hercberg S, Meunier PJ.
    Osteoporos Int. 1997;7(5):439-43.
    PMID: 9425501
Matti Narkia

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

  •  
    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

Wintertime vitamin D insufficiency is common in young Canadian women, and their vitamin... - 0 views

  •  
    Wintertime vitamin D insufficiency is common in young Canadian women, and their vitamin D intake does not prevent it.
    Vieth R, Cole DE, Hawker GA, Trang HM, Rubin LA.
    Eur J Clin Nutr. 2001 Dec;55(12):1091-7.
    PMID: 11781676

    INTERPRETATION: The self-reported vitamin D intake from milk and/or multivitamins does not relate to prevention of low vitamin D nutritional status of young women in winter. Recommended vitamin D intakes are too small to prevent insufficiency. Vitamin D nutrition can only be assessed by measuring serum 25(OH)D concentration.
Matti Narkia

Vitamin D Status: Measurement, Interpretation, and Clinical Application - 0 views

  •  
    Vitamin D status: measurement, interpretation, and clinical application.
    Holick MF.
    Ann Epidemiol. 2009 Feb;19(2):73-8. Epub 2008 Mar 10. Review.
    PMID: 18329892

    Conclusion

    The only way to determine whether a person is vitamin D deficient or sufficient is to measure their circulating level of 25(OH)D. There are a variety of assays used to measure 25(OH)D. The radioimmunoassays and competitive protein binding assays for 25(OH)D are useful in detecting vitamin D deficiency and sufficiency. However, these assays are fraught with technical difficulties, especially if they are not run routinely (Fig. 4) (33). Several reference laboratories have now switched to LC-MS ,which measures both 25(OH)D2 and 25(OH)D3 quantitatively. The total 25(OH)D, i.e., 25(OH)D2 plus 25(OH)D3, is what physicians need to be aware of for their patients. A level >30 ng/mL is
Matti Narkia

The Role of Vitamin D and Calcium in Type 2 Diabetes. A Systematic Review and Meta-Anal... - 0 views

  •  
    The role of vitamin D and calcium in type 2 diabetes. A systematic review and meta-analysis.
    Pittas AG, Lau J, Hu FB, Dawson-Hughes B.
    J Clin Endocrinol Metab. 2007 Jun;92(6):2017-29. Epub 2007 Mar 27. Review.
    PMID: 17389701

    .CONCLUSIONS: Vitamin D and calcium insufficiency may negatively influence glycemia, whereas combined supplementation with both nutrients may be beneficial in optimizing glucose metabolism.
Matti Narkia

Putting cardiovascular disease and vitamin D insufficiency into perspective - 0 views

  •  
    Vitamin D and disease prevention with special reference to cardiovascular disease.
    Zittermann A.
    Prog Biophys Mol Biol. 2006 Sep;92(1):39-48. Epub 2006 Feb 28. Review.
    PMID: 1660034

Matti Narkia

Prevalence of Vitamin D Insufficiency in Brazilian Adolescents - 0 views

  •  
    Prevalence of vitamin D insufficiency in Brazilian adolescents.
    Peters BS, dos Santos LC, Fisberg M, Wood RJ, Martini LA.
    Ann Nutr Metab. 2009;54(1):15-21. Epub 2009 Feb 5.
    PMID: 19194104
    DOI: 10.1159/000199454

    CONCLUSIONS: The present study suggests that even in a sunny climate like Brazil the prevalence of vitamin D insufficiency in adolescents is high. Most likely this is due to low intakes of vitamin D in this group. Due to the limited extent of natural dietary sources of vitamin D, a policy of vitamin D food fortification should be considered in the future, and in the meantime greater use of vitamin D supplements in this population group should be encouraged to provide the increased amounts of this essential nutrient for optimal health.
Matti Narkia

Global vitamin D status and determinants of hypovitaminosis D - SpringerLink - Journal... - 0 views

  •  
    Global vitamin D status and determinants of hypovitaminosis D.
    Mithal A, Wahl DA, Bonjour JP, Burckhardt P, Dawson-Hughes B, Eisman JA, El-Hajj Fuleihan G, Josse RG, Lips P, Morales-Torres J; on behalf of the IOF Committee of Scientific Advisors (CSA) Nutrition Working Group.
    Osteoporos Int. 2009 Jun 19. [Epub ahead of print]
    PMID: 19543765

    CONCLUSION: Reports from across the world indicate that hypovitaminosis D is widespread and is re-emerging as a major health problem globally.
Matti Narkia

Vitamin D Deficiency | Special Topics | Health Professionals | International Osteoporos... - 0 views

  •  
    The review, published in Osteoporosis International, provides a global perspective of vitamin D status across different regions of the world and identifies common and significant determinants of hypovitaminosis D. Six regions of the world were reviewed-Asia, Europe, Middle East and Africa, Latin America, North America, and Oceania-through a survey of published literature.
Matti Narkia

Not enough vitamin D: Health consequences for Canadians -- Schwalfenberg 53 (5): 841 --... - 0 views

  •  
    Not enough vitamin D: health consequences for Canadians.
    Schwalfenberg G.
    Can Fam Physician. 2007 May;53(5):841-54. Review
    PMID: 17872747

    Conclusion

    Low levels of VTD are considered a major public health problem in Canada, especially during the winter. Those with risk factors should be screened for low 25(OH)D levels and repletion therapy instituted if needed. Researchers have estimated that the oral dose of vitamin D3 to attain and maintain 25(OH)D levels >80 nmol/L is 2200 IU/d if baseline levels are 20 to 40 nmol/L, 1800 IU/d if levels are 40 to 60 nmol/L, and 1160 IU/d if levels are between 60 and 80 nmol/L.64

    We need to ensure that patients have healthy blood levels of 25(OH)D to prevent levels of parathyroid hormone from rising and to maximize absorption of calcium, magnesium, and phosphate. Positive effects on bone are marginal at best unless patients consume at least 800 IU/d of VTD. The emerging and exciting role of the VTD receptor and the actions of VTD in maintaining health in other cell types have become more apparent during the last decade.
Matti Narkia

Millions of Needless Deaths - Life Extension - 0 views

  •  
    A large number of new vitamin D studies have appeared in the scientific literature since I wrote my plea to the federal government. These studies don't just confirm what we knew 16 months ago-they show that optimizing vitamin D intake will save even more lives than what we projected.
    Vitamin D More Effective Than Previously Known

    For instance, a study published in June 2008 showed that men with low vitamin D levels suffer 2.42 times more heart attacks. Now look what this means in actual body counts.
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.
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.
1 - 20 of 47 Next › Last »
Showing 20 items per page