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  2. Study casts more doubt on use of high-dose vitamin D pills - AOL

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    An estimated third of Americans 60 and older take the supplements and more than 10 million blood tests for vitamin D levels are performed annually -- despite years of controversy over whether the ...

  3. Dual-energy X-ray absorptiometry - Wikipedia

    en.wikipedia.org/wiki/Dual-energy_X-ray...

    DXA scans can also be used to measure total body composition and fat content with a high degree of accuracy comparable to hydrostatic weighing with a few important caveats. [18] [specify] From the DXA scans, a low resolution "fat shadow" image can also be generated, which gives an overall impression of fat distribution throughout the body. [19]

  4. Dual X-ray absorptiometry and laser - Wikipedia

    en.wikipedia.org/wiki/Dual_X-ray_absorptiometry...

    DXA scans assume a constant relationship between the amounts of lean soft tissue and adipose tissue. This assumption leads to measurement errors, with an impact on accuracy as well as precision. To reduce soft-tissue errors in DXA, DXL technology was developed in the late 1990s by a team of Swedish researchers led by Prof. Ragnar Kullenberg.

  5. Taking This Daily Vitamin Could Slash Dementia Risk By 40 ...

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    $20.99 at Amazon. Orange Vitamin D3. Rated at 4.7 stars by over 6,000 happy customers on Amazon, this daily vitamin is a tried-and-true product that's affordable and even offers a refreshing ...

  6. Vitamin D Won’t Prevent Falls, Fractures In Older Adults ...

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    The U.S. Preventive Services Task Force say vitamin D supplements do not reduce the risk of falls or bone fractures in healthy older adults. The draft recommendation notes vitamin D can be helpful ...

  7. Bone density - Wikipedia

    en.wikipedia.org/wiki/Bone_density

    A scanner used to measure bone density using dual energy X-ray absorptiometry. Bone density, or bone mineral density, is the amount of bone mineral in bone tissue.The concept is of mass of mineral per volume of bone (relating to density in the physics sense), although clinically it is measured by proxy according to optical density per square centimetre of bone surface upon imaging. [1]

  8. 'I'm a Longevity Expert, and This Is the One Vitamin People ...

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    Vitamins for people over 50. Getting enough vitamins may have been drilled into you early on by parents who insisted you "eat your vegetables." Getting nutrients is vital to health at any age ...

  9. Osteoporosis - Wikipedia

    en.wikipedia.org/wiki/Osteoporosis

    A 2018 review by the USPSTF found low-quality evidence that the routine use of calcium and vitamin D supplements (or both supplements together) did not reduce the risk of having an osteoporotic fracture in male and female adults living in the community who had no known history of vitamin D deficiency, osteoporosis, or a fracture. [128]