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  1. 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.

  2. 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 …

  3. 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 …

  4. 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.

  5. 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 …

  6. 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 …

  7. Spotlight on UPFs: NIH explores link between ultra ... - NHLBI, NIH

    Mar 5, 2025 · In addition to heart disease, studies have linked UPFs to weight gain, hypertension, type 2 diabetes, chronic obstructive pulmonary disease, cancer, and other problems. Studies show that …

  8. Take Action Toward Better Heart Health: | NHLBI, NIH

    Take Action Toward Better Heart Health: Eat a Heart-Healthy Diet A healthy diet that is low in sodium and saturated fat is key to heart disease prevention. Try the highly rated Dietary Approaches to Stop …

  9. Heart Failure - Causes and Risk Factors | NHLBI, NIH

    Mar 24, 2022 · Long-term, or chronic, heart failure is often caused by other medical conditions that damage or overwork your heart. Sudden, or acute, heart failure can be caused by an injury or …

  10. Heart failure - Symptoms and causes - Mayo Clinic

    Jan 21, 2025 · Heart failure occurs when the heart muscle doesn't pump blood as well as it should. Blood often backs up and causes fluid to build up in the lungs and in the legs. The fluid buildup can …