Smoking tobacco is by far the leading cause of lung cancer. About 85% of lung cancer deaths in 2025 are expected to be caused by smoking, and many others will be caused by exposure to …

Apr 30, 2024 · Researchers believe smoking causes lung cancer by damaging the cells that line the lungs. Cigarette smoke is full of cancer-causing substances, called carcinogens.

Apr 10, 2025 · Certain substances — like tobacco, radon, and asbestos — are known to cause cancer. Trying to reduce your exposure to these may lower your risk of developing lung cancer.

May 14, 2025 · It’s more than just smoking. Find out some of the main causes of lung cancer and what puts you at risk for it.

Sep 25, 2024 · Anyone can get lung cancer. Lung cancer happens when cells in the lung mutate or change. Various factors can cause this mutation (a permanent change in the DNA …

Feb 13, 2025 · Lung Cancer Risk Factors Key points Cigarette smoking is the number one risk factor for lung cancer. Radon is another important cause of lung cancer in the United States.

Oct 2, 2025 · Smoking is the main cause of lung cancer, and avoiding it can lower your risk. Secondhand smoke exposure can lead to lung cancer if you do not smoke or have never …

Sep 9, 2025 · Lung cancer does not arise from a single cause but from an interplay of environmental exposures, lifestyle factors, and genetic predispositions. Among these, smoking …

Nov 15, 2025 · “Lung cancer is an abnormal proliferation of cells within the lung,” says Dr. Saiama N. Waqar, a professor of medicine at Washington University School of Medicine in St. Louis …

Explore the causes and risk factors of lung cancer, including the effects of smoking and exposure to carcinogenic materials like radon and asbestos.