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Recommended Dietary Allowances (RDA) Alternative NamesDRI, Dietary Reference Intakes, Recommended Dietary Allowances, RDA
Definition The Recommended Daily Allowances, known as RDAs, are
recommendations for nutrients. They were developed by the Food and
Nutrition Board of the National Academy of Sciences/National Research
Council. They are updated as new research findings surface.
The RDAs state the amount of a nutrient that is needed for most people to
stay healthy. They are different for children, adults, males, and females. The Dietary Reference Intakes, known as DRIs, are an umbrella
group that includes the following other nutrient measures:
- RDAs
- Adequate Intakes, known as AI
- Estimated Average Intakes, known as EAR
- Tolerable Upper Intakes, known as UL
DRIs are slowly becoming the more accepted form for
nutrient recommendations. Experts expect that DRIs will take the
place of the RDAs in time.InformationUnited States Recommended Dietary Allowances (RDA)Recommended Dietary Allowances: National Academy of
Sciences;10th ed., 1989Dietary Reference Intakes: National Academy of Sciences, 1997| Compound |
units |
Adult |
Adult |
Children |
Infants |
Pregnant |
Lactating+ |
|
|
Males (25+years) |
Females (25+years) |
4-8 years |
6-12 mos. |
|
|
| Biotin |
mcg |
30* |
30* |
12* |
6* |
30* |
35* |
| Calcium (Ca) |
mg |
1200* |
1200* |
800* |
270* |
1000* |
1000* |
| Chloride (Cl) |
mg |
750 |
750 |
600 |
300 |
750 |
750 |
| Chromium (Cr) |
mcg |
50-200 |
50-200 |
50-200 |
20-60 |
50-200 |
50-200 |
| Copper (Cu) |
mg |
1.5-3 |
1.5-3 |
1-2 |
0.6-0.7 |
1.5-3 |
1.5-3 |
| Fluoride (F) |
mg |
4* |
3* |
1* |
0.5* |
3* |
3* |
| Folate |
mcg |
400* |
400* |
200* |
80* |
600* |
500* |
| Iodine(I) |
mcg |
150 |
150 |
120 |
50 |
175 |
200 |
| Iron (Fe) |
mg |
10 |
(25-50y) 15(51+y) 10 |
10 |
10 |
30 |
15 |
| Magnesium (Mg) |
mg |
420** |
320** |
130** |
75* |
350-400** |
310-360** |
| Manganese (Mn) |
mg |
2-5 |
2-5 |
2-3 |
0.6-1.0 |
2-5 |
2-5 |
| Molybdenum (Mo) |
mcg |
75-250 |
75-250 |
50-150 |
20-40 |
75-250 |
75-250 |
| Niacin |
mg |
16** |
14** |
8** |
4* |
18** |
17** |
| Pantothenic |
mg |
5* |
5* |
3* |
1.8* |
6* |
7* |
| Phosphorus (P) |
mg |
700** |
700** |
500** |
275* |
700** |
700** |
| Potassium(K) |
mg |
2000 |
2000 |
1600 |
700 |
2000 |
2000 |
| Protein |
g |
63 |
50 |
28 |
14 |
60 |
65 |
| Selenium (Se) |
mcg |
70 |
55 |
30 |
15 |
65 |
75 |
| Sodium (Na) |
mg |
500 |
500 |
400 |
200 |
500 |
500 |
| Vitamin A |
mcgRE* |
1000 |
800 |
700 |
375 |
800 |
1300 |
| Vitamin B1(Thiamine) |
mg |
1.2** |
1.1** |
0.6** |
0.3* |
1.4** |
1.5** |
| Vitamin B2 (Riboflavin) |
mg |
1.3** |
1.1** |
0.6** |
0.4* |
1.4** |
1.6** |
| Vitamin B6 (Pyridoxine) |
mg |
1.7** |
1.5** |
0.6** |
0.3* |
1.9** |
2.0** |
| Vitamin B12 (Cyanocobalamin) |
mcg |
2.4** |
2.4** |
1.2** |
0.5* |
2.6** |
2.8** |
| Vitamin C |
mg |
60 |
60 |
45 |
35 |
95 |
90 |
| Vitamin D |
mcg |
(51-70y) 10*(71+y) 15* |
(51-70y) 10*(71+y) 15* |
(1-8y) 5* |
5* |
5* |
5* |
| Vitamin E |
mgalpha TE* |
10 |
8 |
7 |
4 |
12 |
11 |
| Vitamin K |
mcg |
80 |
65 |
30 |
10 |
65 |
65 |
| Zinc (Zn) |
mg |
15 |
12 |
10 |
5 |
15 |
19 |
g =grams mg = milligrams (0.001 g)mcg = micrograms (0.000001g)IU = International Units RE = Retinol EquivalentAlpha 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
Date Written: 11/18/99
Reviewer: Kathleen A. MacNaughton, RN, BSN
Date Reviewed: 09/18/02
Potential conflict of interest information for reviewers available on request
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