Terrestrial (from the ground)
Cosmic Radiation (from space)
26 mrem
Internal Radiation (in your body)
40 mrem
Travel Related Sources
Other Sources

EPA estimates that about 21,000 lung cancer deaths each year in the U.S. are radon-related. Exposure to radon is the second leading cause of lung cancer after smoking.

For most people, radon is the single greatest environmental source of radiation exposure. Learn more about radiation sources and doses, including radon. For smokers, the risk of lung cancer is significant due to the combined effects of radon and smoking.

Your total radiation dose per year is mrem