What is the role of radon exposure in the etiology of non–small cell lung cancer (NSCLC)?

Updated: Jul 15, 2021
  • Author: Winston W Tan, MD, FACP; Chief Editor: Nagla Abdel Karim, MD, PhD  more...
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Radon is an inert gas produced as a result of uranium decay. Radon exposure is a well-established risk factor for lung cancer in uranium miners. Approximately 2-3% of lung cancers annually are estimated to be caused by radon exposure. Household exposure to radon, however, has never been clearly shown to cause lung cancer.

The US National Research Council’s report of the Sixth Committee on Biological Effects of Ionizing Radiation has estimated that radon exposure causes 2100 new lung cancers each year, while it contributes to lung cancer causation in approximately 9100 persons who smoke.

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