Many diseases are caused by smoking. In addition, if you smoke, you are more susceptible to respiratory ailments as well as coughs and colds. Probably the most well-known diseases caused by smoking are cancer and heart disease. In fact, the majority of lung cancer cases (about 90%) are due to smoking. Other cancers such as kidney cancer, esophageal cancer, pancreatic cancer, cervical cancer and bladder cancer are all attributed to smoking as well.

Cardiovascular disease, as stated, is another major disease caused by cigarettes and is the primary cause of death among smokers. The nicotine in tobacco raises the cholesterol levels in smokers and narrows the arteries resulting in artherosclerosis. As a result the risk for stroke, coronary thrombosis, cerebral thrombosis peripheral vascular disease and heart disease is higher in smokers.

Chronic obstructive pulmonary disease, also known as COPD, is also caused by smoking. — edubook.com