causes of heart disease
Causes of Heart Disease. Heart disease occurs when the arteries and blood vessels that lead to the heart are blocked or not carrying blood correctly. When this happens, important nutrients, such as oxygen, cannot reach your heart.ou may not show symptoms of the disease at certain times. Heart disease is sometimes called âcoronary heart diseaseâ or âCHD.â It is the leading cause of death among adults in the United States, according to the National Heart, Lung, and Blood Institute (NHLBI).