Vitamin D Home>Nutrition>Nutrients>Vitamins_and_Minerals>Vitamin D     Web Pages Reference Guide For Vitamins- Vitamin D Guide with description of the vitamin including suggested dosage, necessity in diet, food sources, and substance interactions. Vitamin D- Overview Explains functions of the vitamin with RDA intake suggestions, symptoms of deficiency, and foods high in calciferol. Vitamin D In depth content explaining role of vitamin in the human body. Includes functions, deficiency signs, and suggested intake. Vitamin D- Calciferol Description of the sunshine vitamin with recommended dosage, deficiency signs, and list of food sources. Vitamin D- Facts and Information Facts on the vitamin such as RDA intake, functions, absorption, and deficiency signs including rickets. Vitamin D, Linus Pauling Institute Discussion of function, deficiency, disease prevention, disease treatment, food sources, supplements, research, and recommendations from the Linus Pauling Institute.