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Selenium status in vegans and lactovegetarians.

B Akesson, P A Ockerman

    The British Journal of Nutrition
    |March 1, 1985
    PubMed
    Summary
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    Selenium levels in plasma were lower in lactovegetarians compared to other groups, despite dietary intake variations. Plasma and urinary selenium showed a correlation among vegetarians, indicating complex interactions.

    Area of Science:

    • Nutritional Science
    • Biochemistry

    Background:

    • Selenium (Se) is an essential trace element with diverse biological functions.
    • Dietary habits, including vegetarianism, can influence selenium status.
    • Understanding selenium bioavailability across different diets is crucial for public health.

    Purpose of the Study:

    • To compare plasma and urinary selenium levels in vegans, lactovegetarians, and omnivores.
    • To investigate the relationship between dietary selenium intake and measured selenium levels.
    • To explore correlations between plasma and urinary selenium concentrations within vegetarian groups.

    Main Methods:

    • Gas-liquid chromatography was employed for precise selenium determination.
    • Subjects were categorized into vegans, lactovegetarians, and omnivorous groups.

    Related Experiment Videos

  • Dietary selenium intake and urinary selenium excretion were quantified.

    • Main Results:

    • Lactovegetarians exhibited lower plasma selenium (0.80 ± 0.18 µmol/l) than omnivores (0.98 ± 0.15 µmol/l).
    • Vegans had lower dietary selenium intake, while lactovegetarians had higher intake compared to omnivores.
    • No direct correlation was found between dietary selenium and urinary selenium levels; however, plasma and urinary selenium were correlated in vegetarians (r=0.51, P<0.05).

    Conclusions:

    • Dietary selenium intake does not solely determine plasma selenium levels in vegetarian populations.
    • Plasma and urinary selenium concentrations are interrelated in vegetarians, suggesting complex metabolic handling.
    • Further research is needed to elucidate the factors influencing selenium status in diverse dietary groups.