Heart failure is a condition where the heart cannot pump blood effectively, leading to insufficient blood flow to meet the body's needs. This can cause symptoms like shortness of breath, fatigue, and swelling in the legs and ankles. It can result from various issues, including coronary artery disease, high blood pressure, or previous heart attacks. Managing heart failure often involves lifestyle changes, medications, and sometimes medical devices. Patients are encouraged to follow a heart-healthy diet, exercise regularly, and monitor their symptoms closely. With proper care, many people with heart failure can lead fulfilling lives while managing their condition effectively.