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home:pathogenesis:vitamind:correlation [10.27.2018] – [Researchers should also measure 1,25-D] sallieqhome:pathogenesis:vitamind:correlation [09.03.2020] – [Researchers should also measure 1,25-D] sallieq
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 ===== Causation is not self-evident ===== ===== Causation is not self-evident =====
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 There are a number of examples where low levels of a substance are known to be associated with but not cause disease.  There are a number of examples where low levels of a substance are known to be associated with but not cause disease. 
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 <blockquote>Of course, the study does not suggest that low and high estradiol concentrations themselves were the cause of increased mortality. <blockquote>Of course, the study does not suggest that low and high estradiol concentrations themselves were the cause of increased mortality.
  
-//**Vasan Ramachandran, MD**//, [[http://www.theheart.org/article/971237.do|Heartwire]]</blockquote>+//**Vasan Ramachandran, MD**//, Heartwire</blockquote>
  
  
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 One of the reasons that 1,25-D isn't measured may be that it is harder to test. But another reason may be that a high 1,25-D is inconsistent with reports of vitamin D "deficiency." How can patients be said to be "deficient" in vitamin D when one of its metabolites, 1,25-D, is often several standard deviations greater than normal? One of the reasons that 1,25-D isn't measured may be that it is harder to test. But another reason may be that a high 1,25-D is inconsistent with reports of vitamin D "deficiency." How can patients be said to be "deficient" in vitamin D when one of its metabolites, 1,25-D, is often several standard deviations greater than normal?
  
 +<blockquote>“The idea that widespread vitamin D deficiency exists in the world has never had any credibility, and the idea that vigorous supplementation is necessary therefore has to be false.”
  
 +“Nowadays it is virtually impossible to buy milk in the US that has not been laced (‘fortified’) with vitamin D. The amounts added, and the content, have been subject to dubious control, and a number of fatalities have occurred due to Vitamin D poisoning from milk.”
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 +“The mis-labeling of this compound as a vitamin is regrettable, as it gave a potential toxin an aura of undeserved innocence. Vitamin D is not a vitamin, but a steroid, which is, in its most active form, a powerful hormone with receptors widely distributed in the tissues of the body. As with other steroids, excessive consumption has risks.” Dr Hywel Davies</blockquote>
  
 {{tag>pathogenesis  Science_behind_vitamin_D Study_Design}} {{tag>pathogenesis  Science_behind_vitamin_D Study_Design}}
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 ===== Notes and comments ===== ===== Notes and comments =====
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 +broken link [[http://www.theheart.org/article/971237.do|Heartwire]]
  
   * Jigsaw suggests:   * Jigsaw suggests:
home/pathogenesis/vitamind/correlation.txt · Last modified: 09.14.2022 by 127.0.0.1
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