The primary signs of heart failure may be very subtle, however it`s alarming to disregard them. The body functioning slows down when the person is sixty-seventy years old. Climbing stairs becomes a difficult task, even if it was formerly easy for you. Exhaustion and dyspnea may also indicate heart problems. Heart failure is caused by something that hurts the muscle or decreases the heart`s ability to function right. The most frequent reasons of this organ`s damage are heart attack and coronary heart disease. Illnesses, coming from heredity, high blood pressure and heart valve defects can also provoke it.