What is radon?Radon is a cancer - causing radioactive gas. It comes from the breakdown of uranium, which is a natural part of soil and rock. It is most commonly found in soil, water, building materials (such as granite or shale), and natural gas. Radon cannot be detected by human senses because it is odorless, tasteless, and invisible.How does radon exposure occur?In closed or poorly vented spaces
Most lung cancer is caused by smoking. About 87% of lung cancers are related to smoking. Cancer-causing substances (carcinogens) in tobacco smoke damage lung cells. Over time, these damaged cells may develop into lung cancer.