The UK's National Health Service reported that lung cancer is one of the most common types of cancer. The authority noted that smoking is a leading cause of the disease. The NHS advises consulting a doctor promptly if you suspect you have lung cancer. Key symptoms include: a cough lasting more than three weeks; a cough with blood; persistent chest pain; shortness of breath; repeated chest infections; unexplained weight loss; and constant fatigue and reduced effort tolerance. To reduce the risk of lung cancer, one should quit smoking.
