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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids
fore, for selenium the RDA is 120 percent of the EAR). The calculated RDA is rounded to the nearest 5 µg.
RDA for Men
19–30 years
55 µg (0.70 µmol)/day of selenium
31–50 years
55 µg (0.70 µmol)/day of selenium
RDA for Women
19–30 years
55 µg (0.70 µmol)/day of selenium
31–50 years
55 µg (0.70 µmol)/day of selenium
Adults Ages 51 Years and Older
Evidence Considered in Estimating the Average Requirement
Adults ages 51 years and older appear to have the same selenium requirement as younger adults. No pathological conditions related to selenium insufficiency have been reported in older individuals, and markers of selenium status in blood do not differ by age or gender (Hill et al., 1996).
Selenium EAR and RDA Summary, Ages 51 Years and Older
Data from intervention studies support an EAR for the age group 51 years and older of 45 µg/day. The aging process does not appear to impair selenium absorption or utilization.
EAR for Men
51–70 years
45 µg (0.57 µmol)/day of selenium
>70 years
45 µg (0.57 µmol)/day of selenium
EAR for Women
51–70 years
45 µg (0.57 µmol)/day of selenium
>70 years
45 µg (0.57 µmol)/day of selenium
The RDA for selenium 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 selenium; 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 selenium the RDA is 120 percent of the EAR). The calculated RDA is rounded to the nearest 5 µg.
