
Heart disease - Symptoms and causes - Mayo Clinic
Aug 13, 2024 · Symptoms Heart disease symptoms depend on the type of heart disease. Symptoms of heart disease in the blood vessels Coronary artery disease is a common heart condition that affects …
How the Heart Works - How the Heart Beats | NHLBI, NIH
Jun 25, 2025 · Your heartbeat is the contraction of your heart to pump blood to your lungs and the rest of your body. Your heart's electrical system determines how fast your heart beats.
How the Heart Works - How Blood Flows through the Heart | NHLBI, NIH
Jun 25, 2025 · Oxygen-poor blood from the body enters your heart through two large veins called the superior and inferior vena cava. The blood enters the heart's right atrium and is pumped to your right …
Heart attack - Symptoms & causes - Mayo Clinic
Oct 9, 2023 · A heart attack occurs when an artery that sends blood and oxygen to the heart is blocked. Fatty, cholesterol-containing deposits build up over time, forming plaques in the heart's arteries. If a …
Cardiomyopathy - Symptoms and causes - Mayo Clinic
Feb 21, 2024 · Overview Cardiomyopathy (kahr-dee-o-my-OP-uh-thee) is a disease of the heart muscle. It causes the heart to have a harder time pumping blood to the rest of the body, which can lead to …
Coronary Heart Disease Risk Factors - NHLBI, NIH
Dec 27, 2024 · Your risk of coronary heart disease increases based on the number of risk factors you have and how serious they are. Some risk factors — such as high blood pressure and unhealthy …
Omega-3s for heart health? Exploring potential benefits and risks
Oct 22, 2024 · NHLBI feature article explores the potential benefits and risks of omega-3 supplements, including fish oil, for heart health.
Heart arrhythmia - Symptoms and causes - Mayo Clinic
Oct 13, 2023 · Coronary artery disease, other heart problems and previous heart surgery. Narrowed heart arteries, a heart attack, heart valve disease, prior heart surgery, heart failure, cardiomyopathy …
Atrial tachycardia - Symptoms and causes - Mayo Clinic
Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital …
Physical Activity and Your Heart - Benefits | NHLBI, NIH
Mar 24, 2022 · When done regularly, moderate- and vigorous-intensity physical activity strengthens your heart muscle. This improves your heart's ability to pump blood to your lungs and throughout your …