Everyday ozone may harm asthma sufferers more than thought
NCT ID NCT04109807
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at how breathing in low levels of ozone—similar to what you might encounter on a typical day in Chapel Hill—affects lung function and airway inflammation in adults with mild asthma. Researchers will compare ozone exposure to filtered air in 18 participants. The goal is to see if even small amounts of ozone can cause breathing problems or inflammation.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
ozone exposure
What this could lead to
If successful, this could help understand how everyday ozone levels impact people with asthma, potentially guiding air quality recommendations.
What could go wrong
This is a small, early-phase study with only 18 participants, so results may not apply broadly. The trial is currently suspended, which may delay findings.
Disclaimer
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This is a summary of
the original study
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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 North Carolina CEMALB
Chapel Hill, North Carolina, 27599, United States