Category Archives: 25-hydroxyvitamin D

Vitamin D and Immunity

Posted on March 30, 2019 by Robert Barrington
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Vitamin D and Depression

Posted on March 24, 2019 by Robert Barrington
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Vitamin D Supplements to Treat Depression

Posted on September 4, 2018 by Robert Barrington

Depression is a serious lifestyle disease that often has no known cause. Treatment of depressive symptoms can be highly difficult as no clear mechanism of development has been explained. This suggests that depression is multifactorial and a large number of … Continue reading →

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Biochemical Individuality In Response To Vitamin D Supplements

Posted on August 29, 2018 by Robert Barrington

Vitamin D is an important nutritional factor. However, vitamin D is not a true vitamin as a dietary source is not essential. In cases where adequate sunlight exposure is available, vitamin D is not required in the diet. Further, dietary … Continue reading →

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Vitamin D: Skin Versus Diet

Posted on August 28, 2018 by Robert Barrington

Humans obtain vitamin D from two sources. Firstly, humans are able to synthesise vitamin D in their skin. This cutaneous reaction is catalysed by ultraviolet light and results in the production of vitamin D3, also called cholecalciferol. Humans can also … Continue reading →

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Vitamin D Toxicity: Part 2

Posted on August 22, 2018 by Robert Barrington

In my previous article on vitamin D toxicity (here), I explained that vitamin D can become toxic at high doses. The traditional explanation of vitamin D toxicity relates to the ability of high intakes of one vitamin D metabolite, 1,25-dihydroxyvitamin … Continue reading →

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Vitamin D Toxicity: Part 1

Posted on August 21, 2018 by Robert Barrington

Vitamin D should really be considered a hormone rather than a vitamin as a dietary source is not required. Vitamin D can be produced in the skin by the action of ultraviolet light but diet can also contribute to total … Continue reading →

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Bad Weather? Time To Start Taking Vitamin D Again

Posted on August 16, 2018 by Robert Barrington
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How Does Vitamin D Relate To Fertility?

Posted on August 13, 2018 by Robert Barrington

Infertility affects 15 to 25 % of couples of reproductive age in Western countries. Infertility is therefore one of the leading causes of disease in Western nations. Because of the high rates of infertility, couples are increasingly turning to fertility … Continue reading →

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Vitamin D Safety: The Sun Versus Supplements

Posted on July 27, 2018 by Robert Barrington

Vitamin D is becoming a popular supplement, and for good reasons. Recent research suggests that the vitamin D levels of those living at higher latitudes is too low due to inadequate sunlight exposure, particularly during the winter months. Low levels … Continue reading →

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