What can cause lung cancer?

Lung cancer is a leading cause of cancer death worldwide. There are many risk factors for lung cancer, including:

* Smoking: Cigarette smoking is the leading cause of lung cancer. The chemicals in cigarettes damage the cells in the lungs and lead to cancer formation.

* Secondhand smoke: Exposure to secondhand smoke, the smoke that comes from someone else's cigarette, can also increase the risk of lung cancer.

* Radon gas: Radon is a radioactive gas that is found in the air and soil. It is the second leading cause of lung cancer in the United States.

* Asbestos: Exposure to asbestos, a mineral that was once commonly used in construction, can also increase the risk of lung cancer.

* Other occupational exposures: Exposure to certain chemicals, such as arsenic, beryllium, and chromium, can also increase the risk of lung cancer.

* Family history of lung cancer: People who have a family history of lung cancer are more likely to develop the disease themselves.

* Age: The risk of lung cancer increases with age.

* Gender: Men are more likely to develop lung cancer than women.

It is important to note that not all people who are exposed to these risk factors will develop lung cancer. However, avoiding these risk factors can help reduce the risk of lung cancer.