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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids
TABLE 6-5 Effect of Vitamin E Supplements on Subjects Who Had Been on Basal Diet for 54 Months
a Intake was estimated from food and vitamin E supplements using conversion factors from Table 6-1.
b Plasma α-tocopherol concentrations were estimated for each individual by averaging the values on days 13, 21, 30, and 138.
SOURCE: Adapted from Horwitt (1960).
weights may be greater in men, women have larger fat masses as a percent of body weight, and thus may have similar requirements.
EAR for Men
19–30 years
12 mg (27.9 µmol)/day of α-tocopherol
31–50 years
12 mg (27.9 µmol)/day of α-tocopherol
EAR for Women
19–30 years
12 mg (27.9 µmol)/day of α-tocopherol
31–50 years
12 mg (27.9 µmol)/day of α-tocopherol
The RDA for vitamin E is set by assuming a coefficient of variation (CV) of 10 percent (see Chapter 1) because information is not available on the standard deviation of the requirement for vitamin E; the RDA is defined as equal to the EAR plus twice the CV to cover the needs of 97 to 98 percent of the individuals in the group (therefore, for vitamin E the RDA is 120 percent of the EAR). The calculated RDA in milligrams is rounded up.
