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[Selenium, an essential and toxic element. Latin American data].

W Jaffé1

  • 1Comisión Coordinadora de Investigaciones en Alimentos y Nutrición, U.C.V., Caracas, Venezuela.

Archivos Latinoamericanos De Nutricion
|June 1, 1992
PubMed
Summary

Selenium (Se) ingestion varies greatly worldwide, with Latin America showing extreme highs and lows. Further research in this region is recommended, utilizing urinary excretion or hen egg-white analysis for monitoring Se levels.

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Area of Science:

  • Environmental Science
  • Nutritional Science
  • Human Health

Background:

  • Selenium (Se) is an essential trace element with critical roles in human health.
  • Significant geographical variations in selenium intake and status are observed globally.
  • Understanding these variations is crucial for public health and nutritional strategies.

Purpose of the Study:

  • To highlight the substantial differences in selenium ingestion across various countries.
  • To identify regions with particularly high or low selenium levels.
  • To recommend further research and suitable monitoring methods for selenium status.

Main Methods:

  • Review of existing literature on selenium intake, sources, deficiencies, and excesses.
  • Comparison of selenium ingestion data, particularly in breastfed children from Venezuela and Finland.

Related Experiment Videos

  • Analysis of sesame seed samples from 20 countries as indicators of selenium levels.
  • Examination of reported urinary and serum selenium levels in scientific literature.

    • Main Results:

    • Breastfed children in Venezuela ingest approximately ten times more selenium than those in Finland.
    • Sesame seeds from Latin America exhibited the highest and lowest selenium values among samples from 20 countries.
    • Literature data indicate that the highest and lowest urinary and serum selenium levels are predominantly reported from Latin America.

    Conclusions:

    • There are profound geographical disparities in selenium ingestion, with Latin America being a region of significant variability.
    • Further research on selenium in Latin America is strongly recommended to understand these extremes.
    • Urinary selenium excretion and analysis of freely foraging hen egg-white are proposed as effective indicators for selenium monitoring.