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.
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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
Locations
-
University of North Carolina CEMALB
Chapel Hill, North Carolina, 27599, United States
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