Causes of Lung Cancer

The primary cause of lung cancer is the long-term exposure of lung cells to harmful substances, particularly tobacco smoke. Over time, this exposure damages the DNA in lung cells, leading to mutations that cause cancer.

• Tobacco Smoke: Contains thousands of toxic chemicals that damage lung tissue, creating the ideal environment for cancer to develop. Smokers and those exposed to secondhand smoke are at the highest risk.
• Radon and Other Carcinogens: Radon gas, asbestos fibers, and occupational exposure to chemicals such as arsenic and nickel can also lead to DNA mutations in the lungs, increasing cancer risk.

Symptoms of Lung Cancer

• Persistent Cough: A cough that doesn’t go away or gets worse over time.
• Chest Pain: Discomfort or pain in the chest, especially when breathing deeply, coughing, or laughing.
• Shortness of Breath: Difficulty breathing or feeling winded during everyday activities.
• Hoarseness: A change in your voice, often described as raspy or hoarse.
• Coughing Up Blood: Even a small amount of blood in mucus should be evaluated by a doctor immediately.
• Unexplained Weight Loss: Sudden and unintended weight loss may be a sign of lung cancer.
• Fatigue and Weakness: Persistent tiredness that doesn’t improve with rest.
• Recurrent Lung Infections: Frequent episodes of bronchitis or pneumonia can indicate lung cancer.