National Academy of Sciences Press Release, Nov. 30, 2010
Low levels of vitamin D have have been correlated with the development of cancer and other diseases in humans. Despite innumerable reports and studies confirming that most Americans are vitamin D deficient, the Institute of Medicine today released it's recommendation for lowered dietary intake levels of vitamin D and calcium. The upshot: "600 IUs daily meets the needs of almost everyone in the United States and Canada" and a review of studies on the health effects of vitamin D, such as protection against cancer, heart disease, autoimmune diseases, and diabetes "do not offer the evidence needed to confirm that vitamin D has these effects."
Then why is it, you ask, that your blood test came back showing your vitamin D level at a fraction of what it should be? The IOM has an answer for that: "The measurements of sufficiency and deficiency - the cutpoints - that clinical laboratories use to report test results have not been based on rigorous scientific studies and are not standardized." Oh snap. It's impressive what science can infer from a review of the literature rather than from actual research studies.
Once the new reduced dietary guidelines for D are established, it will become more difficult for ordinary people to get enough vitamin D to fend off cancer and other diseases. This is welcome news for the soft eugenicists who guide national policy.
IOM Press Release