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Related Experiment Videos

Selenium status in Greenland Inuit.

Jens C Hansen1, Bente Deutch, Henning Sloth Pedersen

  • 1Centre for Arctic Environmental Medicine, University of Aarhus, Vennelyst Boulevard 6, Aarhus DK-8000, Denmark. jch@mil.au.dk

The Science of the Total Environment
|August 25, 2004
PubMed
Summary

Selenium levels in Greenlandic populations are linked to marine diet. As dietary habits shift towards Western foods, future selenium intake may decline, impacting public health.

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Area of Science:

  • Environmental Science
  • Human Nutrition
  • Public Health

Background:

  • Greenlandic selenium intake historically high, linked to marine diet.
  • Declining human selenium levels correlate with reduced traditional food consumption.
  • Inuit dietary transition to Western foods may threaten selenium sufficiency.

Purpose of the Study:

  • Assess current selenium status in three Greenlandic populations.
  • Investigate factors influencing selenium levels, including diet and marine fatty acids.
  • Evaluate potential future selenium intake scenarios.

Main Methods:

  • Analysis of whole blood and plasma selenium concentrations.
  • Correlation analysis with long-chain marine fatty acids.
  • Dietary surveys and food composition analysis in West Greenland.

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Main Results:

  • Mean whole blood selenium varied significantly across groups (178–488 microg/l).
  • Plasma selenium levels showed a tendency to stabilize around 140 microg/l.
  • Selenium blood levels strongly correlated with marine fatty acids; whale skin is a primary source.

Conclusions:

  • Selenium status varies geographically within Greenland.
  • Dietary shifts pose a risk to sustained selenium intake.
  • Marine fatty acids are key indicators and contributors to selenium status.