How many lung cancer deaths are related to radon? Scientists estimate that 15,000 to 22,000 lung cancer deaths in the U.S. each year are related to radon exposure. By ProMatcher Staff Updated: 08/08/2016 Next Question Source: National Safety Council Next Question Find Local Pros Free Actuaries Cost Estimates Related Questions What is the second leading cause of lung cancer? Where is radon typically found in the U.S.? Which U.S. state has the greatest concentration of radon? How many homes have elevated radon levels? How Much Does It Cost to Get Rid of Radon?