Vitamin D is a hormone precursor that contributes to the maintenance of normal levels of calcium and phosphorus in the blood. Despite its name, vitamin D is not a true vitamin, but it could best be described as a conditional vitamin, since human skin can create it in some circumstances. Vitamin D is also known as calciferol.
Vitamin D plays an important role in the maintenance of an intact and strong skeleton. Its primary task is to regulate the amount of calcium and phosphorus in the blood by ensuring correct intake and secretion (from intestines and urine, respectively).
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Osteomalacia
Rickets :: Vitamins and Minerals

Science News Online: Enough Isn't Enough: An Epidemic of Vitamin D Deficiency - Report on a study that found many U.S. women of childbearing age, particularly those of African descent, lack sufficient vitamin D even though they consume the recommended amount.
Meta Description: [ Many U.S. women of childbearing age, particularly those of African descent, lack sufficient vitamin D even though they consume the recommended amount. ]
Vitamin D (Calciferol) - A detailed description of calciferol, including information on its basic functions, health benefits, and deficiency symptoms.
Vitamin D (Calciferol) - Vitamin D (calciferol) fact sheet offering details on the functions, health benefits, dosage, sources, deficiency and overdose symptoms of this vitamin.
Meta Description: [ Vitamin D (calciferol, ergocalciferol, cholecalciferol) fact sheet with information on vitamin D (calciferol) sources, uses, health benefits, dosage, RDA, deficiency symptoms, overdose and toxicity. ]
Vitamin D, Linus Pauling Institute - Discussion of function, deficiency, disease prevention, disease treatment, food sources, supplements, research, and recommendations from the Linus Pauling Institute.
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Vitamin D- Calciferol - Description of the sunshine vitamin with recommended dosage, deficiency signs, and list of food sources.
Meta Description: [ Vitamin D (calciferol) forms part of your daily diet, and plays a certain role in maintaining your health, vitality and wellbeing. ]
Vitamin D- Facts and Information - Facts on the vitamin such as RDA intake, functions, absorption, and deficiency signs including rickets.
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Vitamin D- Overview - Explains functions of the vitamin with RDA intake suggestions, symptoms of deficiency, and foods high in calciferol.
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