Experts believe that vitamin D should be in the range between 30 to 50 nanograms

Notional Graph of Expert Opinions of vitamin D levels

Consensus: 0 ng is bad and 30 ng is good/ok

CLICK HERE for more information on chart

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VitaminDWiki has a lot more information

• All items in Vitamin D Blog
• Home Page
• List of categories of vitamin D information - with # of items in each
• Published Recommendations
• Reasons for Vit D deficiency
• Low cost and many forms of vitamin D
• Low cost Vitamin D tests
• Vitamin D 101