Are You Getting Enough Vitamin D?
What you need to know about vitamin D, including how much you need, food sources of vitamin D, vitamin D blood tests, and vitamin D deficiency.
Robert Heaney, MD, vitamin D researcher, Creighton University professor.
Eduardo Baetti, MD, rheumatologist, Kaiser Permanente, Atlanta.
Patsy Brannon, PhD, registered dietitian; professor of nutritional sciences; director, Cornell University Dietetic Internship, Division of Nutritional Sciences; member, Institute of Medicine Committee to Review the Dietary Reference Intakes for Calcium and Vitamin D.
Keli Hawthorne, clinical dietitian, Baylor College of Medicine.
Holick, M. Journal of Clinical Endocrinology & Metabolism, July 2011.
Institute of Medicine, Food and Nutrition Board: "Dietary Reference Intakes for Calcium and Vitamin D. Washington, DC: National Academy Press, 2010."
National Institutes of Health Office of Dietary Supplements: "Dietary Supplement Fact Sheet: Vitamin D."
National Institute of Arthritis and Musculoskeletal and Skin Diseases: "Osteoporosis Overview."
National Institutes of Health Office of Dietary Supplements: “Vitamin D Fact Sheet for Consumers.”