Heart disease and stroke are cardiovascular heart and blood vessel diseases CVDs. Heart disease includes several types of heart conditions. The most common type in the United States is coronary heart disease also known as coronary artery disease , which is narrowing of the blood vessels that carry blood to the heart. A stroke occurs when the blood supply to the brain is blocked or when a blood vessel in the brain bursts, causing brain tissue to die. Top of Page. Breathing secondhand smoke also harms your health. Secondhand smoke is the smoke from burning tobacco products.
Cigarette smoking is a well-established risk factor for all forms of stroke. While both the general public and the global healthcare system are aware of the vascular risks associated with smoking, the prevalence of tobacco use has remained largely unchanged over the last quarter of a century. Approximately one in five US adults are classified as regular smokers, with the initiation of smoking typically occurring during the teenage years. Although the increased risk of stroke associated with smoking is generally acknowledged, it is less well recognized that considerable scientific evidence implicates a strong dose—response relationship between smoking and stroke risk.