The Endocrine Society has published guidelines.

First, the details.

• The Task Force was composed of a Chair, 6 additional experts, and a methodologist.
• Consensus was guided by systematic reviews of evidence and discussions during several conference calls and e-mail communications.

And, the results.

• Vitamin D deficiency is common in all age groups, and few foods contain vitamin D.
• Suggested daily intake and tolerable upper limits depend on age and clinical circumstances.
• Measuring 25-hydroxyvitamin D levels using a reliable assay is the initial diagnostic test for patients at risk for deficiency.
• There is insufficient evidence to recommend screening people who are not at risk for deficiency or to prescribe vitamin D to attain the normal calcium levels for cardiovascular protection.
• Tolerable upper limits of vitamin D, which “should not be exceeded without medical supervision,” include:
  • 1000 IU/day: Infants aged up to 6 months
  • 1500 IU/day: Infants aged 6 months to 1 year old
  • 2500 IU/day: Children aged 1 to 3 years
  • 3000 IU/day; Children aged 4 to 8 years
  • 4000 IU/day: Everyone older than 8 years

The bottom line?

Medscape has a detailed summary of the recommendations, here.

6/9/11 20:83 JR