Iron pills may boost exercise in thin air, tiny study hints
NCT ID NCT05349630
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This early-phase study tests whether taking iron supplements for 30 days can improve exercise performance in low-oxygen conditions. Five healthy adults will take ferrous sulfate pills daily and then exercise on a stationary bike. The goal is to see if iron helps the heart and lungs work better when oxygen is scarce.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
ferrous sulfate (iron supplement)
What this could lead to
If it works, this could suggest that iron supplements help people with low oxygen levels exercise better.
What could go wrong
This is a very small early-phase study with only 5 people, so results may not apply broadly. It is not designed to prove a treatment for any disease.
Disclaimer
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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University of Colorado Anschutz Medical Campus
Aurora, Colorado, 80045, United States
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