Radon gas is a risk factor for developing lung cancer.
However, smoking is the greatest risk factor for lung cancer. The risk of lung
cancer is increased for people who smoke, are exposed to second-hand smoke, and
also have radon contact. The risk of radon-related lung cancer is 12 times
higher for smokers than non-smokers.1
Everyone has some contact to radon. Radon is a gas that is released
from rock and soil and is present in the air. In closed spaces, such as caves,
mines, and energy-efficient homes, radon levels can increase because the gas
cannot freely exchange with outdoor air.
Radon levels can be measured in enclosed spaces. Better ventilation
can lower radon levels. Government environmental offices have information on
radon.