Over 161,000 people in the United States lost their lives to lung cancer in 2008, according to the National Cancer Institute (NCI). Unfortunately, lung cancer may not begin to show signs or symptoms until the cancer is at an advanced stage. The long-term outlook is always better the sooner the cancer is detected, so keep an eye out for these preliminary signs.
Cough
According to the National Institutes of Health (NIH), a constant cough is one of the first preliminary signs of lung cancer, especially if it never improves. See a doctor right away if you start coughing up blood.
Breathing Difficulty
Lung cancer may also cause breathing difficulties, including wheezing and shortness of breath. The NCI notes that you may also experience voice hoarseness.
Chest Pain
The NHI has also found that persistent chest pain may be another preliminary sign of lung cancer. This pain is distinguished from other forms of chest pain because it will not get better with time.
Fatigue
A general sense of fatigue or weakness is another common symptom of lung cancer, according to the NCI. Fatigue on its own may not be serious, but it should be taken seriously when combined with other symptoms.
Weight Loss
Lung cancer may also cause an unexplained decrease in body weight and a loss of appetite, as noted by the NHI.
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