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| | Alderra : Nutrition : Nutrients : Vitamins and Minerals : Vitamin D (Site not responding. Last check: 2007-10-08) |
 | | A detailed description of calciferol, including information on its basic functions, health benefits, and deficiency symptoms. |
 | | Discussion of function, deficiency, disease prevention, disease treatment, food sources, supplements, research, and recommendations from the Linus Pauling Institute. |
 | | Explains functions of the vitamin with RDA intake suggestions, symptoms of deficiency, and foods high in calciferol. |
| www.alderra.com /index.php?c=Nutrition/Nutrients/Vitamins_and_Minerals/Vitamin_D (216 words) |
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