- Reference Guide For Vitamins- Vitamin D - Guide with description of the vitamin including suggested dosage, necessity in diet, food sources, and substance interactions.
www.cybervitamins.com/vitamin_d.htm
- Vitamin D - In depth content explaining role of vitamin in the human body. Includes functions, deficiency signs, and suggested intake.
www.nutritionfarm.com/focus/Vitamins/vitamin_D.htm
- Vitamin D, Linus Pauling Institute - Discussion of function, deficiency, disease prevention, disease treatment, food sources, supplements, research, and recommendations from the Linus Pauling Institute.
www.orst.edu/dept/lpi/infocenter/vitamins/vitaminD/index.html
- Vitamin D- Calciferol - Description of the sunshine vitamin with recommended dosage, deficiency signs, and list of food sources.
www.anyvitamins.com/vitamin-d-info.htm
- Vitamin D- Cholecalciferol - Discusses the role of vitamin in consumer diet, intake, benefits of dosage, and variety of foods high in calciferol.
www.knowledgecenters.versaware.com/notoc/getpage.asp?book=Vitaminerals&page=033000363.asp
- Vitamin D- Facts and Information - Facts on the vitamin such as RDA intake, functions, absorption, and deficiency signs including rickets.
www.go-symmetry.com/vitamin-d.htm
- Vitamin D- Overview - Explains functions of the vitamin with RDA intake suggestions, symptoms of deficiency, and foods high in calciferol.
www.nlm.nih.gov/medlineplus/ency/article/002405.htm
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