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Vitamin A intake and status

H van den Berg1

  • 1TNO Nutrition and Food Research Institute, Zeist, Netherlands.

European Journal of Clinical Nutrition
|July 1, 1996
PubMed
Summary
This summary is machine-generated.

Vitamin A intake in the Netherlands is slightly below recommendations, particularly for those avoiding liver. Assessing vitamin A status has challenges, especially in marginal ranges.

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Area of Science:

  • Nutrition Science
  • Public Health

Background:

  • Vitamin A is crucial for vision, immune function, and cell growth.
  • Accurate assessment of vitamin A intake and status is vital for public health.
  • Data on vitamin A levels in the Netherlands population is limited.

Purpose of the Study:

  • To review methods for assessing vitamin A intake and status.
  • To discuss current data on vitamin A intake and status in the Netherlands.
  • To identify challenges in vitamin A status assessment.

Main Methods:

  • Literature review of vitamin A assessment methodologies.
  • Analysis of available dietary intake data for vitamin A in the Netherlands.
  • Review of biochemical and functional tests for vitamin A status.

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Main Results:

  • Average vitamin A intake in the Netherlands is below the Recommended Dietary Allowance (RDA).
  • Adult men average 830 Retinol Equivalents (RE), women average 650 RE, below Dutch RDA.
  • Individuals avoiding liver products may have lower vitamin A intakes and potentially limited stores.
  • Biochemical and functional tests for vitamin A deficiency exist, but sensitivity/specificity in suboptimal ranges are problematic.

Conclusions:

  • Valid tests for diagnosing deficient vitamin A status are available.
  • Assessing marginal or suboptimal vitamin A status presents significant challenges.
  • Further research is needed to establish the functional significance of observed lower vitamin A intakes.