What is Heart Failure?

Heart failure is a chronic condition where the heart cannot pump enough blood to meet the body's needs, often due to weakened or stiffened heart muscle. Key facts include that it affects over 64 million people worldwide, and common causes are coronary artery disease, high blood pressure, and previous heart attacks. Symptoms include shortness of breath, fatigue, and fluid retention, but early diagnosis and advanced treatments can significantly improve quality of life and survival.