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Matti Narkia

Vitamin D deficiency is the cause of common obesity - 0 views

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    Vitamin D deficiency is the cause of common obesity.
    Foss YJ.
    Med Hypotheses. 2009 Mar;72(3):314-21. Epub 2008 Dec 2.
    PMID: 19054627
    doi:10.1016/j.mehy.2008.10.005

    Common obesity and the metabolic syndrome may therefore result from an anomalous adaptive winter response. The stimulus for the winter response is proposed to be a fall in vitamin D. The synthesis of vitamin D is dependent upon the absorption of radiation in the ultraviolet-B range of sunlight. At ground level at mid-latitudes, UV-B radiation falls in the autumn and becomes negligible in winter. It has previously been proposed that vitamin D evolved in primitive organisms as a UV-B sensitive photoreceptor with the function of signaling changes in sunlight intensity. It is here proposed that a fall in vitamin D in the form of circulating calcidiol is the stimulus for the winter response, which consists of an accumulation of fat mass (obesity) and the induction of a winter metabolism (the metabolic syndrome). Vitamin D deficiency can account for the secular trends in the prevalence of obesity and for individual differences in its onset and severity. It may be possible to reverse the increasing prevalence of obesity by improving vitamin D status.
Matti Narkia

NEJM -- Hypovitaminosis D in Medical Inpatients - 0 views

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    Hypovitaminosis D in medical inpatients.
    Thomas MK, Lloyd-Jones DM, Thadhani RI, Shaw AC, Deraska DJ, Kitch BT, Vamvakas EC, Dick IM, Prince RL, Finkelstein JS.
    N Engl J Med. 1998 Mar 19;338(12):777-83.
    PMID: 9504937

    Conclusions Hypovitaminosis D is common in general medical inpatients, including those with vitamin D intakes exceeding the recommended daily amount and those without apparent risk factors for vitamin D deficiency.
Matti Narkia

Vitamin D deficiency is the cause of common obesity - ScienceDirect - Medical Hypotheses - 0 views

  •  
    Vitamin D deficiency is the cause of common obesity.
    Foss YJ.
    Med Hypotheses. 2009 Mar;72(3):314-21. Epub 2008 Dec 2.
    PMID: 19054627
    doi:10.1016/j.mehy.2008.10.005
Matti Narkia

A randomized controlled trial of vitamin D3 supplementation for the prevention of sympt... - 0 views

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    A randomized controlled trial of vitamin D3 supplementation for the prevention of symptomatic upper respiratory tract infections.
    Li-Ng M, Aloia JF, Pollack S, Cunha BA, Mikhail M, Yeh J, Berbari N.
    Epidemiol Infect. 2009 Mar 19:1-9. [Epub ahead of print]
    PMID: 19296870
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