THE sale of vitamin, mineral, and food supplements constitutes a billion-dollar business in the United States, and older persons consume a disproportionate amount of these expensive items.1 Nevertheless, information on the specific needs of older people is scarce. Since 1943, the National Academy of Sciences' Food and Nutrition Board has published recommended dietary allowances (RDAs) for infants, children, and adults.2 The ninth edition of these recommendations was published in 1980. The 10th edition was scheduled for publication in 1985, but because of a lack of consensus among those formulating the RDAs, publication will be delayed. The National Research Council has . . .
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Schneider et al. (1986) studied this question.
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