Related topics: immune system , heart disease , cardiovascular disease , vitamin d deficiency
Vitamin D
hideVitamin D is a group of fat-soluble prohormones, the two major forms of which are vitamin D2 (or ergocalciferol) and vitamin D3 (or cholecalciferol). The term vitamin D also refers to metabolites and other analogues of these substances. Vitamin D3 is produced in skin exposed to sunlight, specifically ultraviolet B radiation.
Vitamin D plays an important role in the maintenance of organ systems.
Vitamin D deficiency can result from inadequate intake coupled with inadequate sunlight exposure; disorders that limit its absorption; conditions that impair conversion of vitamin D into active metabolites, such as liver or kidney disorders; or, rarely, by a number of hereditary disorders. Deficiency results in impaired bone mineralization and leads to bone softening diseases rickets in children and osteomalacia in adults, and possibly contributes to osteoporosis. However, sunlight exposure, to avoid deficiency, carries other risks, including skin cancer; this risk is avoided with dietary absorption, either through diet or as a dietary supplement.
For more information about Vitamin D, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with vitamin d
Heart failure linked to gene variant affecting vitamin D activation
Dec 01, 2009 |
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Previous studies have shown a link between low vitamin D status and heart disease. Now a new study shows that patients with high blood pressure who possess a gene variant that affects an enzyme critical to normal vitamin ...
Vitamin D levels associated with survival in lymphoma patients
Dec 05, 2009 |
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A new study has found that the amount of vitamin D in patients being treated for diffuse large B-cell lymphoma was strongly associated with cancer progression and overall survival. The results will be presented at the annual ...
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Citrus surprise: Vitamin C boosts the reprogramming of adult cells into stem cells
Dec 24, 2009 |
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Famous for its antioxidant properties and role in tissue repair, vitamin C is touted as beneficial for illnesses ranging from the common cold to cancer and perhaps even for slowing the aging process. Now, ...
Heart transplant patients appear to have elevated risk for multiple skin cancers
Dec 21, 2009 |
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Many heart transplant patients develop multiple skin cancers, with increased risk for some skin cancers among patients with other cancers and with increasing age, according to a report in the December issue of Archives of ...
Want to live well? Harvard experts offer pragmatic pointers on getting healthy and staying there
Dec 17, 2009 |
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You are what you eat. You're also how you feel, how you exercise, how you sleep, how you handle money, how you relate to people, and what you value.
More effort needed to crack down on 'secret remedies'
Dec 17, 2009 |
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The medical establishment and politicians must do more to crack down on alternative medicine, argues a senior scientist on BMJ.com today.
Roasting Does More than Enhance Flavor in Peanuts
Dec 09, 2009 |
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(PhysOrg.com) -- Agricultural Research Service (ARS) scientists have shown that increasing roast color intensity steadily ramps up the antioxidant capacities of peanuts, peanut flour and peanut skins.
Pistachios may reduce lung cancer risk
Dec 08, 2009 |
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A diet that incorporates a daily dose of pistachios may help reduce the risk of lung and other cancers, according to data presented at the American Association for Cancer Research Frontiers in Cancer Prevention Research Conference, ...
ADA releases updated position paper on nutrient supplementation
Dec 08, 2009 |
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While supplements can help some people meet their nutrition needs, eating a wide variety of nutrient-rich foods is the best way for most people to obtain the nutrients they need to be healthy and reduce their risk of chronic ...
ASGE issues guidelines on management of antithrombotic agents for endoscopic procedures
Dec 08, 2009 |
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According to a new guideline from the American Society for Gastrointestinal Endoscopy (ASGE) regarding the management of antithrombotic agents for endoscopy, aspirin and/or NSAIDs may be continued for all elective endoscopic ...
The changing pattern of childhood blindness in developing countries
Dec 08, 2009 |
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"Changing patterns of global childhood blindness suggest a reassessment of research, training, and programmatic needs," says a team of eye specialists from India, Malawi, and Tanzania.
Antioxidant compound reduced incidence of colorectal metachronous adenomas
Dec 08, 2009 |
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Supplementation with a selenium-based antioxidant compound decreased the risk of developing new polyps of the large bowel — called colorectal metachronous adenomas — in people who previously had colorectal polyps removed.
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