Category Archives: 1,25-dihydroxyvitamin D / Calcitriol

The Three Best Ways To Improve Vitamin D Status

Vitamin D is important because it is converted to the hormone 25-hydroxyvitamin D in the liver. The 25-hydroxyvitamin D is then further converted to 1, 25-dihydroxyvitamin D in the kidney, and this form is also hormonally active. The active firms … Continue reading

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Vitamin D and Mood Disorders

Vitamin D is increasingly being shown to possess a wide range of cellular effects. These effects are known to include changes to brain chemistry, the implications of which are not fully understood. It is suspected that vitamin D plays a … Continue reading

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Vitamin D and Bone Pain

Vitamin D is an essential nutrient, that can be considered a hormone. Vitamin D is required for a wide range of functions in the body, one of which is the maintenance of correct calcium homeostasis. Chronic low levels of vitamin … Continue reading

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Do Vitamin D Supplements Relieve Depression?

Evidence suggests that there is an association between poor vitamin D status and mood disorders. In particular, there appears to be a greater risk of depression in those with low levels of the active metabolite of vitamin D in their … Continue reading

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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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