How do people get lung cancer?

There are many risk factors associated with lung cancer, but the most common cause is smoking tobacco products. In fact, smoking is responsible for about 80% of all lung cancer cases. Other risk factors include exposure to secondhand smoke, exposure to asbestos, exposure to radon gas, and a family history of lung cancer.

Smoking tobacco products

Cigarettes, cigars, and pipes all contain tobacco, which contains a variety of chemicals that can damage the DNA of cells in the lungs. This damage can lead to mutations that cause cells to grow and divide uncontrollably, which can eventually lead to lung cancer.

Exposure to secondhand smoke

Secondhand smoke is the smoke that is exhaled by a smoker and then inhaled by someone else. It contains the same harmful chemicals as firsthand smoke, and it can also cause lung cancer.

Exposure to asbestos

Asbestos is a mineral that was once commonly used in construction materials, such as insulation, roofing, and floor tiles. Asbestos fibers can become airborne and can be inhaled, which can lead to lung cancer.

Exposure to radon gas

Radon gas is a radioactive gas that can be found in the air and in the ground. It is the second leading cause of lung cancer in the United States.

A family history of lung cancer

People who have a family history of lung cancer are at an increased risk of developing the disease. This is because they may inherit genes that make them more susceptible to the effects of carcinogens.

Other risk factors

Other risk factors for lung cancer include:

* Air pollution

* Chronic obstructive pulmonary disease (COPD)

* HIV infection

* Weakened immune system

Preventing lung cancer

The best way to prevent lung cancer is to never start smoking or to quit smoking if you do. You should also avoid exposure to secondhand smoke, asbestos, radon gas, and other lung cancer risk factors.