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Iron, Zinc, and Physical Performance.

James P McClung1

  • 1Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, MA, 01760, USA. James.P.McClung8.civ@mail.mil.

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Summary
This summary is machine-generated.

Poor iron and zinc status negatively impacts physical performance. Supplementation beyond recommended levels shows no additional physical benefits in well-nourished individuals.

Keywords:
ExerciseIronNutritionPhysical performanceZinc

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Area of Science:

  • Nutritional Science
  • Human Physiology
  • Sports Medicine

Background:

  • Iron and zinc are essential trace elements vital for numerous bodily functions, including those impacting physical performance.
  • Iron deficiency anemia is a widespread nutritional issue globally.
  • Zinc deficiency is clinically observed, but its prevalence is challenging to determine due to a lack of precise biomarkers.

Purpose of the Study:

  • To comprehensively review the scientific literature on the relationship between iron and zinc status and physical performance.

Main Methods:

  • Systematic review of existing clinical and population studies.
  • Analysis of research examining the effects of iron and zinc status on physical capabilities.

Main Results:

  • Diminished physical performance is consistently reported in individuals with inadequate iron and/or zinc levels.
  • No significant evidence supports enhanced physical performance from iron or zinc supplementation above recommended dietary allowances in individuals with adequate nutrient status.

Conclusions:

  • Maintaining adequate iron and zinc status is crucial for optimal physical performance.
  • Current evidence does not support the routine supplementation of iron or zinc beyond recommended levels for improving physical performance in well-nourished populations.