RDA
Recommended Dietary
Allowance(RDA): average
daily level of intake sufficient
to meet the nutrient
requirements of nearly all
(97%-98%) healthy people.
Adequate Intake (AI):
established when evidence
is insufficient to develop
anRDAand is set at a level
assumed to
ensurenutritionaladequacy
.
Estimated Average
Requirement (EAR)
Other units to measure
dietary intake
The Tolerable Upper
Intake Level (UL)
Adequate Intake (AI)
RDA
history
The recommended dietary
allowance (RDA) was
developed during World War
II by Lydia J. Roberts, Hazel
Stiebeling, and Helen S.
Mitchell, all part of a
committee established by the
United States National
Academy of Sciences in
order to investigate issues of
nutrition that might "affect
national defense
Calculating RDA
REC
TodeterminetheRDAfor protein,
multiply the weight in pounds by 0.36
Weight (lb)
% nutrient
requirement
Activity levels
Energy
Requirements
REC
Physical Activity Ratio (PAR) =
Energy cost of an activity per minute
Energy cost of basal metabolism per minute
Energy
Requirements
Adult male 2400-3900
kcal/kg
Adult female 1900-3000
kcal/kg
Pregnant woman 2200
kcal/kg
Lactating women 2600
kcal/kg
Age
Energy Requirements(kcal/kg)
Male Female
Children (1-3yrs) 910 830
Children (4-6yrs) 1230 1200
(6-7yrs) 1510 1400
(8-10yrs) 1750 1630
(11-12yrs) 2180 2010
Adolescent (13-
15yrs)
2580 2140
(16-18yrs) 3060 2450
Protein
Requirements
Age Protein Requirements (g/kg)
0-6 months 2.3-1.8
7-12 months 1.8-1.5
1-12 yrs. 17-41
13-18 55-60 boys/ 55 girls
Adult man 55
Adult woman 45
Pregnant woman 55
Lactating Woman 65
Fat
Requirements
Age Fat Requirements %
of total calories
Infants 30
Children up to 15 yrs.15
adolescents 15
Adults 10
Iron
Requirements
Age Iron Requirements
mg/kg
Infants 1
Children up to 12 yrs. 15-20
Adolescents 25 boys/ 35 girls
Adults 20 man / 30 woman
Pregnancy 40
Lactation 30
Calcium
Requirements
Age
Calcium
Requirements
g
Infants
Age Calcium Requirements
g
Infants 0.5-0.6
Children up to 12 yrs. 0.4-0.5
13-15 0.6-0.7
13-15 0.5-0.6
Adults 0.4-0.5
Pregnancy 1
Lactation 1
Vitamin A
Requirements
Age Vitamin A Requirements
µg/kg
Infants 300-400
Children upto 3 yrs 250
4-6yrs 300
7-9 yrs 300
10-12yrs 600
Adolescents 750
Adults 750 man / 750 woman
Pregnancy 750
Lactation 1150