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New research shows vitamin D slashes risk of cancers by 77 percent; cancer industry refuses to support cancer prevention http://www.naturalnews.com/021892.html
Everyone's talking about vitamin D right now, especially since the Institute of Medicine's Food and Nutrition Board (FNB) updated their recommended dietary allowance (RDA) for it. The truth is that most Americans are deficient in vitamin D, and studies show that vitamin D supplementation can both prevent and kill many infections and diseases, including cancer.
Vitamin D isn't actually a vitamin, although scientists refer to it as such. It's actually a steroid hormone that you get from sun exposure, food sources and/or supplementation. The term refers to either vitamin D2 or D3, but according to the National Vitamin D Council, D3 (chemical name 25-hydroxy vitamin D) is real vitamin D, and is the same substance produced naturally through your skin by sun exposure.
Older research appears at odds on whether your body cares which form of D it's getting. But a study in the January 2011 Journal of Clinical Endocrinology & Metabolism found that D3 is 87 percent more effective than D2, and is the preferred form for treating vitamin D deficiency. It's measured in international units (IU's) in nanograms per milliliter, or ng/mL. The Vitamin D Council believes that a person's D3 levels should be at least 50 ng/mLfor your body to function properly. (To determine whether you might be deficient, you need to get your vitamin D levels tested, and ideally, you'll want to get tested regularly thereafter to ensure you're maintaining optimal levels year-round.)
Fourteen famous vitamin D researchers gave the FNB this information, but the FNB apparently ignored the information that the researchers presented because their "updated" RDA levels ended up being so pitifully low that it's doubtful it can significantly impact Americans' deficiency, let alone fight off diseases like cancer and heart disease.
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