Why are there variances in the recommended daily amount of vitamin D between the Institute of Medicine (IOM) and the Endocrine Society (ES)?

Updated: Dec 15, 2020
  • Author: Vin Tangpricha, MD, PhD; Chief Editor: Romesh Khardori, MD, PhD, FACP  more...
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Over the past 2 years, some controversy has arisen around the issue of adequate vitamin D requirements. The Institute of Medicine’s (IOM) recommendations for daily vitamin D requirements are less than those recommended by the Endocrine Society. [2] This difference may stem from the fact that the IOM targets food fortification and the Endocrine Society targets individual patient care. [76] The daily maintenance dose of vitamin D varies by age.

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