剛剛找資料時候看到的參考資料 Smoking cigarettes:
Although smoking has been associated with lung cancer, it also increases the risk of heart disease and peripheral vascular disease (disease in the vessels that supply blood to the arms and legs). Although nicotine is the main active agent in cigarette smoke, other chemicals and compounds like tar and carbon monoxide are also harmful to the heart and blood vessels. Smoking may raise the blood pressure, which increases the risk of stroke in people who already have high blood pressure. Chemicals in cigarette and tobacco smoke lead to the buildup of fatty plaque in the arteries, possibly by injuring the vessel walls.