Objectives: Radon, a radioactive gas, is among the leading causes of lung-cancer worldwide. While public health authorities emphasize radon's health risks, there are spas across Europe which claim health benefits of radon. This study investigates how websites of European radon spas frame radon gas, in order to understand the potential controversy between "radon as carcinogen" and "radon as cure," and its potential impact on public health interventions. Methods: A two-phased frame analysis of websites of radon spas (n = 26) situated in the European Union. Results: Five frames are identified, which present radon as a 1) source of health, 2) natural gas, 3) (non) risk, 4) luxury and 5) fountain of youth. These five partly overlapping frames are at times in clear contrast with the ways in which radon is presented in a public health context. Conclusion: Being aware of the existence and contents of radon frames, which potentially challenge or contradict public health interventions, helps responsible authorities in designing more effective campaigns and interventions.

Austrian Agency for Health and Food Safety Vienna Austria

Belgian Nuclear Research Centre Mol Belgium

Federal Office for Radiation Protection Oberschleissheim Neuherberg Germany

National Radiation Protection Institute Prague Czechia

Research and Innovation Centre Faculty of Economics Matej Bel University Banská Bystrica Slovakia

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