The disadvantages of smoking Essay Sample.. Smoking causes diseases like asthma, and lung cancer, nearly 85 percent of all cases of lung cancer in the United States are caused by smoking. The lungs become coated with tar causing shortness of breath. It also damages the heart, arteries, eyes and digestive system.
Smoking harms nearly every organ of the body. Cigarette smoking causes 87 percent of lung cancer deaths. It is also responsible for many other cancers and health problems. These include lung disease, heart and blood vessel disease, stroke and cataracts.