Heart diseases, also known as cardiovascular diseases, refer to a range of conditions that affect the heart and blood vessels. Some of the most common types of heart diseases include:

1. 1. Coronary artery disease: This is the most common type of heart disease and occurs when the arteries that supply blood to the heart become narrowed or blocked by a buildup of cholesterol and other substances.
   2. Heart attack: A heart attack occurs when the blood flow to a part of the heart is blocked, usually by a blood