<s>[INST] What Causes Heart Failure? [/INST] Any heart condition that damages or weakens your heart can cause heart failure. Sometimes the cause is unknown. The most common causes of heart failure are coronary artery disease and heart attack, according to the Mayo Clinic. The American Heart Association lists other conditions known to cause or increase the risk of heart failure, including:

High blood pressure.
Faulty heart valves.
Heart muscle disease or inflammation.
Congenital heart diseases.
Severe lung disease.
Diabetes.
Obesity.
Sleep apnea. Source: ABBOTT. Link: https://www.abbott.com/corpnewsroom/healthy-heart/6-heart-failure-questions-answered.html. Field: Cardiovascular. Disease: Heart Failure </s>