Category Archives: 1,25-dihydroxyvitamin D / Calcitriol

Should You Take Vitamin D Supplements During the Summer?

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Vitamin D Supplements to Treat Depression

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

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

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

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

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

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How Does Vitamin D Affect Mood?

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Yoghurt As A Fat Loss Tool

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25-Hydroxyvitamin D in the Obese

Vitamin D is an important steroid hormone in human nutrition. Vitamin D can be synthesised in the skin or consumed in the diet. Once present in the blood, vitamin D is hydroxylated to 25-hydroxyvitamin D in the liver. The circulating … Continue reading

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