Dietary Allowances Be Revised?” Shortly thereafter, to continue its collaboration with the larger nutrition community on the future of the Recommended Dietary Allowances (RDAs), FNB prepared, published, and disseminated the concept paper “How Should the Recommended Dietary Allowances Be Revised?” (IOM, 1994), which invited comments regarding the proposed concept, and it held several symposia at nutrition-focused professional meetings to discuss its tentative plans and to receive responses to the concept paper. Many aspects of the conceptual framework of the DRIs came from the United Kingdom’s report Dietary Reference Values for Food Energy and Nutrients in the United Kingdom (COMA, 1991).
The five general conclusions presented in FNB’s concept paper were:
Sufficient new information has accumulated to support a reassessment of the RDAs.
Where sufficient data for efficacy and safety exist, reduction in the risk of chronic degenerative diseases is a concept that should be included in the formulation of future recommendations.
Upper levels of intake should be established where data exist regarding risk of toxicity.
Components of food that may benefit health, although not meeting the traditional concept of a nutrient, should be reviewed, and if adequate data exist, reference intakes should be established for them.
Serious consideration must be given to developing a new format for presenting future recommendations.
Subsequent to the symposium and the release of the concept paper, FNB held workshops at which invited experts discussed many issues related to the development of nutrient-based reference values. In addition, FNB gave attention to the international uses of the earlier RDAs and the expectation that the scientific review of nutrient requirements should be similar for comparable populations.
Concurrently, Health Canada and Canadian scientists were reviewing the need for revision of the RNIs (Canada, 1990). Consensus following a symposium for Canadian scientists, cosponsored by the Canadian National Institute of Nutrition and Health Canada in April 1995, was that the Canadian government should pursue the extent to which involvement with the developing FNB process would benefit both Canada and the United States by leading toward harmonization.
Based on extensive input and deliberations, FNB initiated action to provide a framework for the development and possible inter-