Evolution of Recommended Dietary Allowances—New Directions?

Introduction ........ , , 509 Evolution of Dietary Standards 510 Dietary recommendations 1835-1940 510 Recommended dietary allowances 515 Other dietary standards , , 516 RDA Are Dietary Standards Based on Scientific Principles 518 Primary use of RDA .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 518 Scientific bases for RDA 518 Purposes for Which RDA Have Been Used 522 Information and education 522 Food and nutrition regulations 524 Developm�nt of ,!�w and special foods 524 Therapeutic nutrltlOn ......... 525 Standards for food programs 525 Evaluating the Adequacy of Nutrient Intakes 526 The probability approach 527 Dietary Standards and Guidelines for Healthful Diets 529 Misunderstanding of RDA .. 529 Guidelines for healthful diets , 530 Directions in Dietary Standards and Guidelines 532 Directions in RDA , ........ , ....... ,. 532 Dietary guidelines ....... , 533 Diet and disease 534