Lung Cancer

• According to the American Cancer Society, smoking is responsible for about 87 percent of lung cancer deaths. In addition, it's one of the most difficult cancers to treat.
  
  

COPD

• Chronic Obstructive Pulmonary Disease includes emphysema and chronic bronchitis. The American Lung Association says that smoking is the primary risk factor, causing 80 to 90 percent of COPD deaths.
  
  

Chronic Cough

• Often called "smoker's cough," a chronic cough may indicate respiratory damage, and smoking delays the immune system's response.
  
  

Shortness of Breath

• Obstruction of the air passages from smoking commonly leads to shortness of breath. Lack of oxygen can inhibit everyday activities, and eventually lead to heart disease.
  
  

Throat Cancer

• Tobacco use increases your risk of throat cancer, which can cause extreme difficulty eating, drinking and talking.