Vitamin D levels increased - even back in 2010

2X increase in % with > 40 ng/ml in eight years

Update: Vitamin D levels in US: percent having more than 40 ng doubled (2001-2010) - Dec 2016

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See also VitaminDWiki

• Is 50 ng of vitamin D too high, just right, or not enough
• 4 more reasons to have more than 40 ng of vitamin D - 2015
• Pure North (Calgary) improves health by raising vitamin D to 60 ng
• Best Vitamin D- 40 to 52 ng, achieved with 4000 – 6000 IU daily – Heaney Oct 2014
• Vitamin D (40-70 ng) in Children’s Health – review Sept 2014
• 4 times fewer with vitamin D deficiency in just 4 years ( Connecticut) – March 2016
• Vitamin D supplementation in Ireland - big increase in people with 20-50 nanograms in 20 years – June 2015
• All items in category Optimum Vitamin D 99 items

Announcement by GrassrootsHealth.net May 2016

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