EFFECTS OF CORONARY HEART DISEASE.
With less blood flow, your heart doesn’t get the oxygen it needs, and that can cause chest pain, called angina, especially when you exercise or do heavy labor. It also can affect how well your heart pumps and make the rest of your body short on oxygen, too. Without it, your cells won’t work as well as they should, and you may be short of breath or feel more tired than usual. If plaque breaks off and totally blocks an artery, you have a heart attack.