Abstract
In 2009, the Institute of Medicine (IOM) carefully reviewed the current literature and updated the dietary reference intakes (DRIs) for calcium and vitamin D for North America [1]. The committee used systematic evidence-based reviews by the Agency for Healthcare Research and Quality (AHRQ) for an independent analysis of the world literature by a group of epidemiologists and statisticians [2]. After their report and a review of new studies, the IOM committee decided that the only clinical data that could be used to derive new DRIs had to be based on studies related to bone health.