Calcium requirement in elderly Japanese women.
In order to evaluate calcium requirements (RC) in Japanese elderly women, a calcium balance study was carried out in 9 osteoporotics (73.9 +/- 2.7 years old, mean +/- SE) and 9 normal elderly women (67.0 +/- 2.5 years old). Diet containing 700 mg/day of calcium were given for at least 1 week. Then, diets containing approximately 700 mg/day (722.5 +/- 91.9 mg/day) of calcium in the 1st week and 1,474 mg/day of calcium in the 2nd week were served. The amount of calcium intake to maintain zero balance, defined as daily RC, was 550.4 +/- 50.0 and 648.8 +/- 44.7 mg/day in normal and osteoporotic subjects, respectively. There was no statistically significant difference between these two groups. Although the recommended daily allowance (RDA) for the adult Japanese is 600 mg/day, our study suggests that RDA in the elderly Japanese should be 847 mg.
Department of Geriatrics, Faculty of Medicine, University of Tokyo, Japan.
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AC
deSouza
T
T
Nakamura
K
K
Stergiopoulos
M
M
Shiraki
Y
Y
Ouchi
H
H
Orimo
D000368:Aged; D002118:Calcium / Q000378:metabolism; D002136:Calcium, Dietary / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D009751:Nutritional Requirements; D010024:Osteoporosis / Q000178:diet therapy / Q000378:metabolism / Q000517:prevention & control*
D002136:Calcium, Dietary; D002118:Calcium