Short-term ozone exposure was linked to heart attack and stroke admissions
A large review linked higher ambient ozone with hospital admissions. Its observational findings cannot establish that ozone caused the admissions.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Higher short-term ozone exposure was associated with higher risks of hospital admission for heart attack and stroke. These pooled observational associations do not establish causation. Without baseline admission rates, the abstract cannot show how many additional admissions corresponded to the exposure difference or what it meant for an individual's absolute risk.
This abstract-based summary cannot assess adjustment for other influences or exact exposure windows. Numerical admission results are provided only for heart attack and stroke.
What researchers found
Hospital admission for heart attack
Per 10 μg/m3 higher ozone during short-term exposure; exact window unspecified. The ratio indicates a small relative increase versus lower exposure. Its confidence interval gives a compatible range entirely above equal risk. These figures are not absolute admission probabilities or percentage-point changes.
What the outcome captures
The measured outcome was hospital admission for cardiovascular disease. This does not directly describe deaths, symptom severity, or cardiovascular events that did not lead to hospital admission.
Results varied by setting
Study location and national economic status appeared to influence the associations. The abstract does not explain these differences or provide enough detail to compare risks in particular communities.
The original publication
Impact of Short-Term Exposure to Ozone on Hospital Admissions for Multiple Cardiovascular Diseases: A Systematic Review and Meta-Analysis.
You Y, Chen J, Wang K et al.
J Am Heart Assoc · 2025
- PubMed ID
- 40878994
- Record checked
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