Damage to the lungs can cause systemic failure throughout the human body. There are many factors involved in developing lung cancer, including hereditary and environmental influences and smoking. Anyone who experiences prolonged respiratory signs and symptoms should speak to a doctor and be tested for lung cancer or other conditions that pose significant health risks.


1. Coughing

Though coughing is a symptom of lung cancer, many irritants and other conditions can cause a cough as well. Individuals who are long-time smokers, especially, may overlook this symptom because they have become accustomed to a "smoker's cough." A person who develops a cough that does not go away and does not seem to be brought on by obvious environmental triggers should be tested for respiratory illness.



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