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"According to a 2009 report in the Archives of Internal Medicine, 77 percent of Americans have a vitamin D deficiency that affects their overall health," says Rebecca Park, a registered nurse from New York.
"Vitamin D deficiency results from a lack of sun exposure (for example: if you live in the northern hemisphere, [cover up with clothing, or simply avoid the sun and wear sunscreen]), alteration of the absorption of vitamin D [due to a medical condition]drugs that interfere with the absorption of vitamin D and low dietary intake, "added Dr. Shainhouse. Those most at risk are institutionalized people, the elderly, or people with more pigmented skin.
Park added that people over the age of 50 have less ability to synthesize vitamin D from sunlight and are at increased risk of osteoporosis and arthritis, fractures, weakness muscle and cancers.
"Screening for vitamin D deficiency involves a simple blood test," said Dr. Shainhouse. "The laboratory must measure the level of bioavailable vitamin D, type D3 (skin type) .There is a range of normal, normal, moderate and severe deficiencies."
Your doctor can test you every year.
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