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Recommended Dietary Allowances (RDA)

Alternative Names 
DRI, Dietary Reference Intakes, Recommended Dietary Allowances, RDA

Definition
The RDA's, or Recommended Daily Allowances, are recommendations for nutrients. They were developed by the Food and Nutrition Board of the National Academy of Sciences/National Research Council. They are continually updated as new research findings surface. The RDA's show the amount of a nutrient that is needed to meet the requirements of nearly all (97 to 98 percent) of the healthy population. They are specific to children, adults, males and females.

The DRI 's, or Dietary Reference Intakes, is an umbrella group that includes the RDA's, AI (Adequate Intakes), EAR (Estimated Average Intakes) and UL (Tolerable Upper Intakes). Many of the nutrients have been switched to DRI's. These will eventually take the place of the RDA's.

Information 
United States Recommended Dietary Allowances (RDA)

Recommended Dietary Allowances: National Academy of Sciences;10th ed., 1989

Dietary Reference Intakes: National Academy of Sciences, 1997CompoundunitsAdultAdultChildrenInfantsPregnantLactating+

Males (25+years)Females (25+years)7-10 Years6-12 mos.

Proteing635028146065

Vitamin AugRE*10008007003758001300Vitamin Dug(51-70y) 10*

(70+y) 15*(51-70y) 10*

(70+y) 15*(1-8y) 5*5*5*5*Vitamin Emg

alpha TE*108741211Vitamin Kug806530106565Vitamin Cmg606045359590Folateug400**400**(4-8y) 200**80*600**500**Thiamin (B1)mg1.2**1.1**(4-8y) 0.6**0.3*1.4**1.5**Riboflavin (B2)mg1.3**1.1**(4-8y) 0.6**0.4*1.4**1.6**Niacinmg16**14**(4-8y) 8**4*18**17**Pyridoxine (B6)mg1.7**1.5**(4-8y) 0.6**0.3*1.9**2.0**Cyanocobalamin (B12)ug2.4**2.4**(4-8y) 1.2**0.5*2.6**2.8**Biotinmcg30*30*(4-8y) 12*6*30*35*Pantothenicmg5*5*(4-8y) 3*1.8*6*7*Calcium (Ca)mg1200*1200*(4-8y) 800*270*1000*1000*Phosphorus (P)mg700**700**(4-8y) 500**275*700**700**Iodine(I)ug15015012050175200Iron (Fe)mg10(25-5-y) 15

(51+y) 1010103015Magnesium (Mg)mg420**320**(4-8y) 130**75*350-400**310-360**Copper (Cu)mg1.5-31.5-31-20.6-0.71.5-31.5-3Zinc (Zn)mg15121051519Selenium (Se)ug705530156575Chromium (Cr)ug50-20050-20050-20020-6050-20050-200Molybdenum (Mo)ug75-25075-25050-15020-4075-25075-250Manganese (Mn)mg2-52-52-30.6-1.02-52-5Fluoride (F)mg4*3*(4-8y) 1*0.5*3*3*Sodium (Na)mg500500400200500500Chloride (Cl)mg750750600300750750Potassium(K)mg20002000160070020002000

g =grams

mg = milligrams (0.001 g)

ug = micrograms (0.000001g)

IU = International Units

RE = Retinol Equivalent

Alpha TE = alpha Tocopherol equivalent

+ Generally the higher number was reported.

* AI (Adequate Intake) from the new Dietary Reference Intakes, 1997: Calcium, Phosphorus, Magnesium, Vitamin D and Fluoride. Values have changed from previous RDA.

** RDA (Recommended Dietary Allowance) from the new Dietary Reference Intakes, 1997: Calcium, Phosphorus, Magnesium, Vitamin D and Fluoride. Values have changed from previous RDA.

Author: Clare Armstrong, MS, RD
Reviewer: Kimberly A. Tessmer, RD, LD
Last Updated: 05/21/00
Contributors
Potential conflict of interest information for reviewers available on request  


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