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Related Experiment Videos

Intake of lignans is associated with serum enterolactone concentration in Finnish men and women.

Annamari Kilkkinen1, Liisa M Valsta, Jarmo Virtamo

  • 1Department of Epidemiology and Health Promotion, National Public Health Institute, Helsinki, Finland. annamari.kilkkinen@ktl.fi

The Journal of Nutrition
|May 29, 2003
PubMed
Summary

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Mammalian lignans, or phytoestrogens, are common in Finnish diets, though intake is low. Higher lignan consumption correlates with increased serum enterolactone (EL), a key biomarker.

Area of Science:

  • Nutritional Science
  • Human Health
  • Dietary Bioactives

Background:

  • Mammalian lignans, a class of phytoestrogens, are derived from dietary precursors by gut microflora.
  • Potential health benefits of lignans are recognized, but data on dietary sources and bioavailability are limited.
  • Understanding lignan intake and its relation to biomarkers is crucial for public health nutrition.

Purpose of the Study:

  • To assess lignan intake and identify major dietary sources in a Finnish adult population.
  • To determine the association between dietary lignan intake and serum enterolactone (EL) concentration.
  • To evaluate serum EL as a biomarker for lignan consumption.

Main Methods:

  • A 24-hour dietary recall method was used to estimate lignan intake in 2852 Finnish adults.

Related Experiment Videos

  • Serum enterolactone (EL) concentration was measured in 1784 participants.
  • Statistical analyses correlated lignan intake with serum EL levels.

    • Main Results:

    • Mean daily lignan intake was 173 µg/day for men and 151 µg/day for women.
    • Secoisolariciresinol (SECO) constituted over two-thirds of total lignan intake, primarily from fruits, berries, and cereals.
    • A significant positive association was observed between lignan intake and serum EL concentration (r = 0.19, P < 0.0001).

    Conclusions:

    • Lignans are present in the Finnish diet, with common sources including whole grains, vegetables, and fruits.
    • Despite low mean intake, lignan-rich foods are associated with reduced risk of chronic diseases.
    • Serum enterolactone (EL) concentration serves as a practical biomarker for assessing lignan intake.