American Heart Association - www.americanheart.org
Cigarette smoking is the most important preventable cause of premature death in the United States.
Want evidence of its dangers? Then consider these statistics:
Smokers' risk of heart attack is more than twice that of nonsmokers.
Cigarette smoking is the biggest risk factor for sudden cardiac death -- smokers have two to four times the risk of nonsmokers.
Studies have shown that cigarette smoking is an important risk factor for stroke.
Evidence also indicates that chronic exposure to environmental tobacco smoke (secondhand smoke, passive smoking) may increase the risk of heart disease.