ArticleFrontiers in public health2026
Post-seismic indoor radon exposure in ground-floor gyms: amplified health risk during physical exercise.
Article in Frontiers in public health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Earthquakes trigger geophysical changes that enhance the release and upward migration of radon-222, potentially elevating indoor radon concentrations in ground-contact buildings well above pre-seismic baseline levels during disaster recovery phases. Although radon carcinogenesis, earthquake-related radon anomalies, and exercise physiology have each been extensively studied in isolation, their convergence in high-occupancy ground-floor gymnasiums has not previously been examined. This paper advances and evaluates the following hypothesis: post-seismic indoor radon accumulation in ground-floor gymnasiums, when combined with exercise-induced increases in pulmonary ventilation, produces internal radiation doses that substantially exceed those predicted by standard concentration-based radon reference levels, representing a disproportionate and under-recognized lung cancer risk for physically active populations during earthquake recovery. To evaluate this hypothesis, we synthesize evidence across earthquake geophysics, exercise physiology, and radon dosimetry. Pre-earthquake indoor radon concentrations of 50-300 Bq/m
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