<s>[INST] What Causes Heart Failure? [/INST] The most common causes are myocardial infarction (heart attack), hypertension (high blood pressure), and cardiomyopathy (diseased heart muscle). Less common causes include: heart valve disease, endocarditis (infection of the heart muscle), arrhythmias (abnormal heart rhythm), too much alcohol consumption, anemia, chemotherapy to treat cancer, pulmonary hypertension (high blood pressure in the vessels that supply blood to your lungs), and amyloidosis (protein buildup that can occur in the heart and other organs). Source: WEBMD. Link: https://www.webmd.com/heart-disease/heart-failure/answers-about-heart-failure. Field: Cardiovascular. Disease: Heart Failure </s>