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Iron deficiency among active men.

J Dallongeville1, M Ledoux, G Brisson

  • 1Département de Nutrition, Université de Montréal, Québec, Canada.

Journal of the American College of Nutrition
|June 1, 1989
PubMed
Summary
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Active men with iron deficiency often have inadequate dietary iron intake, particularly from meat sources. While iron absorption is regulated, insufficient intake is a key factor in developing this deficiency in athletes.

Area of Science:

  • Sports Medicine
  • Human Physiology
  • Nutritional Science

Background:

  • Iron deficiency is common in active men, impacting athletic performance.
  • Understanding the causes of iron deficiency in athletes is crucial for prevention and management.

Purpose of the Study:

  • To compare iron absorption, loss, and intake in iron-deficient athletes versus those with normal iron stores.
  • To determine the relative contribution of dietary intake, absorption, and loss to iron deficiency in athletes.

Main Methods:

  • Assessed iron absorption using an iron tolerance test.
  • Measured iron loss via serum haptoglobin (hemolysis) and hemoglobinuria.
  • Evaluated iron intake through dietary records and food frequency questionnaires.

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Main Results:

  • Iron absorption was inversely correlated with iron stores, indicating normal regulatory mechanisms.
  • 28% of subjects exhibited major hemolysis, unrelated to iron status.
  • No significant urinary iron loss (hemoglobinuria) was detected post-exercise.
  • Iron intake was high due to caloric intake, but meat-derived iron was lower in deficient athletes.

Conclusions:

  • Inadequate dietary iron intake, especially from meat, is a significant factor in iron deficiency among athletes.
  • While iron absorption is regulated, insufficient intake plays a primary role in the pathogenesis of iron deficiency in this population.