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  1. Vitamin D - Mayo Clinic

    Mar 21, 2025 · Vitamin D is a nutrient the body needs, along with calcium, to build bones and keep them healthy. The body can absorb calcium only if it has enough vitamin D. Calcium is a major part of …

  2. Vitamin D Deficiency: Causes, Symptoms & Treatment

    Aug 2, 2022 · Vitamin D is an essential vitamin that your body uses for normal bone development and maintenance. Vitamin D also plays a role in your nervous system, musculoskeletal system and …

  3. Vitamin D - Uses, Side Effects, And More - WebMD

    Vitamin D is found in fish, eggs, and fortified milk. It's also made in the skin when exposed to sunlight. During periods of sunlight, vitamin D is stored in fat and then released when...

  4. Vitamin D - Health Professional Fact Sheet

    Vitamin D (also referred to as calciferol) is a fat-soluble vitamin that is naturally present in a few foods, added to others, and available as a dietary supplement. It is also produced endogenously when …

  5. Vitamin D - Wikipedia

    Unlike the other twelve vitamins, vitamin D is only conditionally essential, as with adequate skin exposure to the ultraviolet B (UVB) radiation component of sunlight there is synthesis of …

  6. Vitamin D: Benefits, Sources, Deficiencies - Healthline

    May 20, 2013 · Vitamin D is a fat-soluble vitamin in a family of compounds that includes vitamins D1, D2, and D3. Your body produces vitamin D naturally when it’s directly exposed to sunlight. You can...

  7. 6 Benefits of Vitamin D and The Best Ways to Get It - Verywell Health

    Feb 28, 2025 · Vitamin D is essential for immune system function and bone health and may influence. It may also influence mood regulation and reduce the risk of several chronic health conditions. The …

  8. Vitamin D: Benefits, deficiency, sources, and dosage

    Feb 5, 2024 · What is vitamin D and why does the body need it? Vitamin D is essential for the bones and teeth, the immune system, brain health, and for regulating inflammation. The body produces …

  9. Vitamin D - The Nutrition Source

    It is a fat-soluble vitamin that has long been known to help the body absorb and retain calcium and phosphorus; both are critical for building bone. Also, laboratory studies show that vitamin D can …

  10. Vitamin D - NHS

    Vitamin D helps regulate the amount of calcium and phosphate in the body. These nutrients are needed to keep bones, teeth and muscles healthy. A lack of vitamin D can lead to bone deformities such as …