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Selenium in global food systems.

G F Combs1

  • 1Department of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA. gfc2@cornell.edu.

The British Journal of Nutrition
|May 12, 2001
PubMed
Summary
This summary is machine-generated.

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Adequate selenium (Se) intake is crucial for enzyme function and may reduce cancer risk. Many populations have insufficient Se levels, potentially increasing disease risks.

Area of Science:

  • Nutritional Science
  • Biochemistry
  • Public Health

Background:

  • Selenium (Se) is an essential trace element vital for human health.
  • Suboptimal Se intake impairs antioxidant defenses and redox regulation due to reduced expression of Se-dependent enzymes.
  • Low Se status is linked to increased susceptibility to oxidative stress, infections, and chronic diseases.

Purpose of the Study:

  • To highlight the importance of adequate selenium intake for optimal health.
  • To explore the role of selenium in reducing cancer risk.
  • To assess global selenium intake levels in relation to health recommendations.

Main Methods:

  • Literature review and analysis of existing nutritional data.
  • Examination of the biochemical functions of selenium-dependent enzymes.

Related Experiment Videos

  • Correlation analysis between selenium intake levels and disease morbidity/mortality.

    • Main Results:

    • Recommended daily selenium intake for adults is at least 40 microg/d for maximal enzyme expression, with higher intakes (up to 300 microg/d) potentially reducing cancer risk.
    • Low selenium intake impairs antioxidant capacity and energy production, contributing to health issues.
    • Many global populations exhibit selenium intakes below recommended nutritional levels, and even lower levels compared to cancer-reducing recommendations.

    Conclusions:

    • Increasing selenium intake worldwide is expected to reduce morbidity and mortality from infectious and chronic diseases, including cancer.
    • Ensuring adequate selenium nutrition is a critical public health strategy.
    • Further research into optimal selenium intake levels for various populations is warranted.