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Vitamin D helps your body absorb calcium. Calcium is one of the main building blocks of bone. A lack of vitamin D can lead to bone diseases such as osteoporosis or rickets. Vitamin D also has a role in your nerve, muscle, and immune systems.

You can get vitamin D in three ways: through your skin, from your diet, and from supplements. Your body forms vitamin D naturally after exposure to sunlight. However, too much sun exposure can lead to skin aging and skin cancer. So many people try to get their vitamin D from other sources.

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Photograph of foods containing Vitamin D
Results 1 - 10 of 1,358 for vitamin D
  1. Vitamin D (National Library of Medicine)  
    Vitamin D helps your body absorb calcium. Calcium is one of the main building blocks of bone. A lack of vitamin D can lead to bone diseases such as osteoporosis ...
  2. NIH researchers find vitamin D binding protein may help to assess vitamin D deficiency in African and white Americans November 21, 2013 Measuring vitamin ...
  3. 25-OH vitamin D test; Calcidiol; 25-hydroxycholecalciferol test ... if you have too much or too little vitamin D in your blood. ... than-normal levels can be due to a vitamin D deficiency, which can result from: Lack of exposure ...
  4. Vitamin D From the National Institutes of Health (National Institutes of Health, Office of Dietary Supplements)  
    ... QuickFacts Datos en español Health Professional Other Resources Vitamin D Fact Sheet for Consumers Additional Resources Health Professional ... español Other Resources See also: Calcium What is vitamin D and what does it do? Vitamin D is ...
  5. Vitamin D and Health (Harvard School of Public Health)  
    ... Flu and Colds Risk of Premature Death References Vitamin D Deficiency: A Global Concern If you live north ... and too high in calcium for bone health. Vitamin D Sources and Function Vitamin D is both a ...
  6. Vitamin D Test (American Association for Clinical Chemistry)  
    ... of this website will be limited. Search Help? Vitamin D Tests Share this page: Was this page helpful? ... necessary component of calcium supplements? 1. How much vitamin D should I be getting each day? It depends ...
  7. Calcium and Vitamin D: What You Need to Know (National Osteoporosis Foundation)  
    Calcium and Vitamin D: What You Need to Know Getting enough calcium and vitamin D is essential to building strong, dense bones ... the-counter medications and calcium supplements. What is Vitamin D and What Does it Do? Vitamin D plays ...
  8. Vitamin D (Skin Cancer Foundation)  
    ... SCF expand/collapse Vitamin D Is Tanning Stylish? Vitamin D Vitamin D is essential for strong bones and ... The Skin Cancer Foundation Statement on Obtaining Adequate Vitamin D Vitamin D is essential for strong bones and ...
  9. On the Possible Link Between Vitamin D Deficiency and Cardiovascular Disease Should We D-Lighten Our Lives? Pelle G. Lindqvist , MD, PhD From Clintec, Obstetrics and Gynecology, Karolinska ...
  10. Vitamin D for Good Bone Health (American Academy of Orthopaedic Surgeons)  
    ... considered a hormone. How did we learn about Vitamin D and its importance? When our ancestors stopped working ... diet. Why Is There a New Focus on Vitamin D Today? Recent research has stressed the importance of ...
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