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Vitamin D needs in 2004:1000 IU, 10 years later same author says 3,500 IU

Back in 2004 Dr. Holick said that 1,000 IU and 10 minutes of sun was enough to get all of the benefits from Vitamin D

10,600 publications with Vitamin D in the title were published between Jan 2005 and May 2014

Dr. Holick update in Jan 2014 - need 50,000 IU biweekly = 3500/day

So, instead of 10 minutes to get 1,000 IU, you may need 35 minutes to get 3,500 IU if you are

AND young
  AND not obese
     AND have light skin, without suntan
      AND it is summer
        AND it is the middle of the day
          AND you have lots of skin exposed to the sun
            AND you are lying down
              AND you are not wearing sunscreen.

And much more time otherwise

3X senior
3X obese
5X black skin
XX winter if far from equator

at is.gd/timeinsun

"And it would require nearly constant exposure to sunlight to reach the levels he (Dr. Holick) recommends"
Why Are So Many People Popping Vitamin D? NYT April 2017
*Vitamin D supplementation guidelines (adults – 50,000 IU per week) – Feb 2017Co-authored by Dr. Holick

Vitamin D needs in 2004:1000 IU, 10 years later same author says 3,500 IU

5561 visitors, last modified 21 Aug, 2017,

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Links to this page
- Vitamin D supplementation guidelines (adults – 50,000 IU per week) – Feb 2017 Vitamin D levels have been crashing since 1995 (Polish Children, Elite Military, etc) Vitamin D math mistakes made by the IoM in 2010 – K Baggerly 2016-2017 1000 IU should be the new vitamin D RDA (if you think 20 ng is enough) - May 2017 Vitamin D consensus: 400 IU for infants, less than 10 ng is too low, if low sun need to supplement – April 2017 Dark-skinned hunter-gatherers may generate 2,000 IU of vitamin D daily - June 2016 2000 IU of vitamin D- doctors trained that it was too much, but it is often too little Vitamin D levels are dropping rapidly – what you need to do Nurses continuing education – Vitamin D Overview 2400 IU of Vitamin D is need to get most above 30 nanograms – Sept 2017 Holick interview by Mercola on Vitamin D – Dec 2015 Chicago Sun Times on vitamin D: Depression, chest pain, fibromyalgia, Holick, 3000 IU without test - May 2010 400 IU Vitamin D did not affect menopause (400 IU affects virtually nothing) - RCT May 2015 Best of VitaminDWiki Latest Vitamin D Wiki News

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