Nutritional status in a healthy elderly population: vitamin C

Am J Clin Nutr. 1982 Aug;36(2):332-9. doi: 10.1093/ajcn/36.2.332.

Abstract

Vitamin C status in 270 free-living and healthy elderly was determined from dietary intakes and plasma levels of ascorbic acid. Mean dietary intake for women (n = 145) was 137 and 142 mg/day for men (n = 125). The median intake of supplemental ascorbic acid for women was 355 mg/day (n = 85) and 500 mg/day (n = 70) for men. The mean plasma ascorbic acid level for women was 1.30 mg/dl and was significantly higher than for men, 1.13 mg/dl. Less than 2% were at risk for developing clinical symptoms of hypovitaminosis C. It was estimated that intakes needed to maintain a plasma ascorbic acid level of 1.0 mg/dl would be 75 mg/day for women and 150 mg/day for men. Our data suggest that a different recommended dietary allowance for ascorbic acid should be considered for men and women.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Aged*
  • Ascorbic Acid / blood*
  • Diet
  • Female
  • Food, Fortified
  • Humans
  • Male
  • Nutrition Surveys*
  • Nutritional Physiological Phenomena*
  • Nutritional Requirements*
  • Sex Factors

Substances

  • Ascorbic Acid