What does the evidence say about Iron Exercise Performance Randomized Trial?

The current Migaku evidence database contains 2 reusable source documents for Iron Exercise Performance Randomized Trial. This answer focuses on benefits, uncertainty, and practical interpretation. - Iron's role in oxygen transport, mitochondrial respiration, and energy metabolism is central and even in the absence of anemia, low iron stores may greatly affect physical performance.Despite this, iron deficiency is frequently overlooked as a potential cause of unexplained fatigue, reduced exercise capacity, and presyncope, which complicates the diagnostic evaluation of athletes. [McErlean Sarah M.E. (2026); evidence level 4] - New physiological evidence suggests that the cutoffs should be closer to 50 μg/L, as that is when the gastrointestinal tract begins to increase iron absorption. [McErlean Sarah M.E. (2026); evidence level 4] - These higher thresholds are associated with improved aerobic performance and reduced exercise intolerance in women. [McErlean Sarah M.E. (2026); evidence level 4] - Exercise intolerance is a common yet diagnostically challenging complaint in athletes. [McErlean Sarah M.E. (2026); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.