The New York Times has, over the years, had many articles on Vitamin D
Jane Brody was the most recient: Reasons That Vitamin D May Matter
She allows that 1,000 IU is good, but wants to wait for a clinical trial to finish in 2016 before recommending 2,000 IU
We doubt that the 2016 clinical trial using 2,000 IU will show much benefit for the obese woman who makeup that entire trial.

Here is the comment which Vitamin D Life placed, which NYT did not post (for unknown reason)

35 completed random controlled clinical trials with positive results
http://www.vitad.org/tiki-index.php?page_id=2303

60 overviews of vitamin D - examples: MS, how much to take, Toxicity, Obesity, seniors,
http://www.vitad.org/tiki-browse_categories.php?parentId=57

700+ intervention clinical trials (take vitamin D and see what happens)
http://www.vitad.org/tiki-index.php?page_id=2210

26 reasons for vitamin D deficiency - 12 of which are new in the past 40 years
http://www.vitad.org/tiki-index.php?page_id=1586

Published recommendations for vitamin D around the world
http://www.vitad.org/tiki-index.php?page_id=1293
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Tried again to post a comment - this time without any URLs - in case that was the problem - It worked!!

Actually there already have been more than 35 completed random controlled clinical trials of vitamin D with positive results.

Vitamin D is looking so promising that there are >700 intervention clinical trials (take vitamin D and see what happens), far more than the total for all other supplements ever.

There are more intervention trials for vitamin D than any other medical drug, substance, or device
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A few previous NYT on vitamin D

• NYT on Vitamin D Nov 2009
• NYT Jane Brody March 2011
  Fosamax and other bisphosphonates appear to prevent the constant healing of microfractures, and reduce the “toughness” of bones.
• NYT Jane Brody Oct 2011 Osteoporosis