 Kill 434,000 Americans every year  Most avoidable cause of death in US  70% increase in risk of death to heart disease  Cause 80% of all lung cancer  Kill 50,000 non-smokers every year

 Nicotine  Tar  Carbon Monoxide  Carcinogens

 Increases heart rate and blood pressure  Heart attack  Ulcers

 Damages cilia  Respiratory infection  Chronic Bronchitis = inflammation and excess mucous in the bronchial tubes  Emphysema = loss of elasticity of the lungs

 Restricts oxygen flow to the brain  Stroke

 Lung cancer  Bladder and other cancers

 Mainstream smoke = passes through the filter when a smoker inhales  Sidestream smoke = rises from the cigarette when it is not being smoked (most potent)  Second-hand smoke = previously inhaled smoke  Passive smoker = a nonsmoker that inhales sidestream and second hand smoke