Did you know?

The World Health Organization estimates that radon causes between 3 and 14 percent of all lung cancers in a country. The final percentage depends on two factors: the national average radon level and the prevalence of smoking within the country. Though individuals may think only excessive levels of radon can contribute to lung cancer, the WHO notes that studies conducted in various parts of the world, including Europe, North America and China, have found that even low concentrations of radon like those found in residential settings can contribute to the occurrence of lung cancer.