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Vitamin C load test in elderly subjects

R M Pinto1, M do R Unamuno, M M Rodrigues

  • 1Division of Nutrition, School of Medicine of Ribeirão Preto-USP, Brazil.

Archivos Latinoamericanos De Nutricion
|March 1, 1993
PubMed
Summary
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Elderly individuals showed low vitamin C levels, indicating marginal deficiency. Supplementation with ascorbic acid (vitamin C) is recommended to improve nutrient status in this population.

Area of Science:

  • Gerontology
  • Nutritional Science
  • Biochemistry

Background:

  • Ascorbic acid (vitamin C) is essential for numerous physiological functions.
  • Nutritional status, particularly vitamin C, can decline in elderly populations.
  • Assessing vitamin C levels is crucial for maintaining health in older adults.

Purpose of the Study:

  • To evaluate ascorbic acid (vitamin C) status in elderly subjects.
  • To investigate fasting serum levels and response to a vitamin C load test.
  • To identify potential factors contributing to vitamin C deficiency in the elderly.

Main Methods:

  • Measured fasting serum ascorbic acid levels in elderly men and women.
  • Administered an ascorbic acid load test and monitored serum levels hourly.

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  • Collected dietary intake data and demographic information.

    • Main Results:

    • Elderly women exhibited lower fasting serum ascorbic acid levels than men.
    • The ascorbic acid load test indicated limited tissue reserves of vitamin C.
    • Low daily intake (around 20 mg/day) was observed in the study group.

    Conclusions:

    • The elderly group likely has marginal vitamin C deficiency.
    • Factors like low intake, absorption, metabolism, or excretion may contribute to low vitamin C levels.
    • Increased dietary intake of ascorbic acid is recommended for this population.