The many types of chemicals in tobacco products damage the blood vessels and lungs and causes cancer. In particular, smoking causes chronic bronchitis and emphysema which leave a person so short of breath they can barely walk around their house. It also results in cancer of the lungs, mouth, throat, esophagus and urinary bladder, all of which are fatal. Smoking by pregnant women can cause severe damage to the fetus. Second hand smoke can cause disease in nonsmoking family members who live with a smoker.
Smoking also results in discoloration of the teeth and fingertips and bad breath.
Smoking promotes wrinkling of the shin. It dulls the senses of taste and smell. The clothes smokers wear and the furniture in their house often reeks of tobacco. Watching smokers huddled outside a nonsmoking building in inclement weather is reminiscent of heroin addicts huddled in an alley shooting up. We haven't even gotten to the cardiovascular effects of smoking.