The heart is the least generated organ in the human body. The plug of blood flow causes the heart to die quickly when the flow is interrupted. Since the heart cannot grow back new muscles, it heals by scar formation. This leaves a patient with a deficit in the amount of heart muscle he or she has. As the illness increases, the heart cannot keep up with the body’s demand for blood flow. The imbalance of supply and demand is the crux for heart failure.