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Nutritional aspect of zinc availability.

F Cámara1, M A Amaro

  • 1Department of Food Science and Nutrition, University of Córdoba, Campus de Rabanales, Edificio C-1, Carretera N-IV, Km 396 A, 14014 Córdoba, Spain.

International Journal of Food Sciences and Nutrition
|April 19, 2003
PubMed
Summary

Zinc deficiency is a global issue due to low food content and absorption challenges. This study reviews factors affecting zinc availability to find ways to improve it.

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Area of Science:

  • Human Nutrition
  • Trace Elements
  • Nutritional Science

Background:

  • Zinc is vital for human health, yet deficiency remains a significant global nutritional problem.
  • Dietary zinc content is often low, and its absorption is influenced by various physiological and dietary factors.
  • Understanding these factors is crucial for addressing widespread zinc insufficiency.

Purpose of the Study:

  • To compile and synthesize existing and current research on factors influencing zinc bioavailability.
  • To identify key physiological and dietary elements that impact the body's ability to absorb zinc.
  • To provide a foundation for strategies aimed at enhancing zinc availability from food sources.

Main Methods:

  • Comprehensive literature review of past and present studies.
  • Analysis of physiological factors affecting zinc absorption (e.g., phytates, polyphenols, other minerals).
  • Evaluation of dietary patterns and food processing effects on zinc bioavailability.

Main Results:

  • Identified phytates and polyphenols as major inhibitors of zinc absorption.
  • Highlighted the role of animal-based proteins in enhancing zinc bioavailability.
  • Noted that certain cooking methods can influence zinc content and absorption.

Conclusions:

  • Zinc bioavailability is a complex interplay of dietary composition and physiological status.
  • Strategies to improve zinc availability should focus on reducing inhibitors and enhancing enhancers in the diet.
  • Further research is needed to optimize dietary recommendations for zinc sufficiency.

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