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Severe Osteoarthritis not helped by vitamin D if not vitamin D deficient 2013-2015

Effect of Vitamin D Supplementation on Progression of Knee Pain and Cartilage Volume Loss in Patients With Symptomatic Osteoarthritis - A Randomized Controlled Trial 2013

  • In 2013 I could not understand why the study did not find a benefit
  • Finally, 31 months later ,I found out that they had filtered the subjects, eliminating all of those who were deficient (<10ng?), but failed to mention the filtering in the study nor abstract
  • Added to bottom of the page: Medical Press Sept 2015
    McAlindon says that a limitation of his clinical trial "is that for ethical reasons, we could not enroll people who are medically deficient in D, so none of the participants was really deficient. Therefore, we couldn't rule out the possibility that people who are extremely deficient in D might experience some benefit from vitamin D."
  • Henry Lahore, admin of VitaminDWiki
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