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.
Screening tests help your doctor look for a problem before you have symptoms. This increases your chances of finding the problem early, when it's more treatable.Studies don't show that routine screening for lung cancer is right for most people. But it may help those who have the highest risk for lung cancer—people 55 and older who are or were heavy smokers.Lung cancer screening is done with a low-dose CT scan. A CT scan uses X-rays, or radiation, to make detailed pictures of your body. Who should be screened for lung cancer?Annual lung screening is only recommended for heavy smokers. That means people with a smoking history of at least 30 pack years. A pack year is a way to measure how heavy a smoker you are or were. To figure out your pack years, multiply how many packs a day (assuming 20 cigarettes per pack) you smoke by how many years you have smoked. For example:If you smoked 1 pack a day for 15 years, that's 1 times 15. So you have a smoking history of 15 pack years.If you
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