Category Archives: 1,25-dihydroxyvitamin D / Calcitriol

Vitamin D and Cancer: More Evidence of A Protective Effect

Posted on March 27, 2017 by Robert Barrington

Vitamin D is not actually a vitamin, but a steroid hormone. The traditional role for vitamin D was seens as regulating calcium homeostasis, whereby increased circulating levels of the vitamin D metabolite 25-hydroxyvitamin D increased the intestinal absorption of calcium. … Continue reading →

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25-Hydroxyvitamin D Levels and Risk of Diabetes

Posted on February 20, 2017 by Robert Barrington

Vitamin D is a hormone synthesised in the skin via the action of ultraviolet light on cholesterol. Vitamin D can be consumed from food, but foods containing high amounts of vitamin D are not commonly consumed in the Western diet. … Continue reading →

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Test Your Own Vitamin D Levels Without A Blood Test Part 2

Posted on February 5, 2017 by Robert Barrington
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Vitamin D and Calcium

Posted on January 16, 2017 by Robert Barrington

Reading any medical or nutritional textbook it becomes apparent that vitamin D and calcium metabolism are intertwined. Vitamin D, actually a steroid hormone, is required for the correct absorption of calcium, and in this way, levels of vitamin D regulate … Continue reading →

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Vitamin D Fortification of Foods

Posted on January 12, 2017 by Robert Barrington

There is growing evidence that vitamin D levels are associated with a protection from a number of diseases. In particular diseases that centre on the development of insulin resistance such as the metabolic syndrome, type 2 diabetes, obesity and cardiovascular … Continue reading →

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Factors Affecting Vitamin D Levels

Posted on December 13, 2016 by Robert Barrington

Vitamin D and its metabolites 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D are involved in cell differentiation and cell regulation. This role as a steroid hormone, may explain the association between low levels of vitamin D and a number of Western lifestyle … Continue reading →

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More On Vitamin D Deficiency

Posted on December 5, 2016 by Robert Barrington

Vitamin D deficiency is known to lead to imbalances in calcium homeostasis, which can in turn cause osteomalacia in adults and rickets in children. In Western nations, the symptoms of vitamin D deficiency are quite rare, despite studies consistently showing … Continue reading →

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Vitamin D and Insulin

Posted on November 29, 2016 by Robert Barrington

Traditionally, the role for vitamin D in human metabolism has been seen to be one of calcium regulation. Vitamin D is actually a hormone, not a vitamin, and is synthesised endogenously in the skin from the action of ultraviolet light … Continue reading →

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Type 2 Diabetes and Vitamin D

Posted on June 10, 2016 by Robert Barrington

Vitamin D deficiency is associated with type 1 and type 2 diabetes. As some evidence suggests that vitamin D may have insulin sensitising effects, these associations have been interpreted as providing evidence that higher plasma concentrations of the active vitamin … Continue reading →

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Vitamin D From the Sun

Posted on April 10, 2016 by Robert Barrington
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