Highlights the impact of nonanemic iron deficiency on aerobic performance in athletes, suggesting a need for tailored iron assessments.
Exercise intolerance in athletes is often attributed to cardiopulmonary or autonomic causes; however, nonanemic iron deficiency is a common and under-recognized contributor that may hinder aerobic adaptation. Ferritin thresholds used in general populations do not reflect athletes' higher physiological iron requirements.
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McErlean et al. (2026) studied this question.
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