Health Tip: Don't Neglect Warning Signs of Lung Disease

(HealthDay News) -- Your lungs are delicate organs, and whatever is in the air you breathe can directly affect their health.

The American Lung Association says warning signs of lung disease include:

• A cough that lasts at least a month.

• Shortness of breath after little or no activity, or that doesn't improve after you've finished exercising.

• Wheezing or other signs of difficulty breathing.

• Chronic chest pain that lasts at least a month.

• Producing blood when you cough.