AI each may serve as the basis for adjusting individual recommendations. Qualified health professionals should adapt the recommended intake to cover higher or lower needs.
Tables S-1 through S-9 provide the recommended intake levels, whether RDAs or AIs, for vitamin A, vitamin K, chromium, copper, iodine, iron, manganese, molybdenum, and zinc by life stage and gender group. For most of these micronutrients, AIs rather than RDAs are proposed for infants to age 1 year. EARs and RDAs, however, are proposed for iron and zinc for infants 7 to 12 months of age because the level of iron and zinc in human milk does not meet the needs of the older infants and because factorial data are available to estimate the average requirement. Neither AIs nor RDAs were proposed for arsenic, boron, nickel, silicon, or vanadium.