Lung cancer is primarily caused by the uncontrolled growth of abnormal cells in the tissues of the lungs. The exact cause of why this happens is not always clear, but there are several risk factors associated with the development of lung cancer: Smoking: This is the leading cause of lung cancer. Cigarette smoke contains numerous carcinogens (cancer-causing agents) that can damage the cells in the lungs. Even exposure to secondhand smoke can increase the risk. Radon Gas: Radon is a naturally occurring radioactive gas that can be released from the ground into the air and water. Prolonged exposure to high levels of radon can increase the risk of lung cancer. Asbestos: Exposure to asbestos fibers, often in workplaces like construction or shipbuilding, can lead to lung cancer, particularly in smokers. Occupational Exposures: Some occupations involve exposure to carcinogenic substances like arsenic, chromium, nickel, or certain organic chemicals, which can increase the risk of lung can...