Heart disease, also known as cardiovascular disease, refers to a range of conditions that affect the heart and blood vessels, including coronary artery disease, heart failure, and arrhythmias. These conditions can develop over time due to a build-up of fatty deposits in the arteries, high blood pressure, or damage to the heart muscle. Symptoms can vary depending on the type of heart disease but may include chest pain or discomfort, shortness of breath, fatigue, and swelling in the legs, ankles, or feet. Treatment options can include lifestyle changes, medications, or surgical procedures, depending on the severity of the condition. Prevention of heart disease is possible through a healthy diet, regular exercise, and avoiding smoking and excessive alcohol consumption.