When a coronary artery becomes blocked, the part of the heart muscle supplied by that coronary artery dies, this is more commonly known as a heart attack or myocardial infarction. The usual symptoms of heart attack are severe, persistent, crushing chest pain radiating to the arms, with sweating, nausea, vomiting and breathlessness. If you suspect you are having a heart attack, call an ambulance, chew an aspirin, this reduces further blood clotting and rest until the ambulance arrives. Heart attacks frequently occur without warning and without the presence of any other obvious symptoms like angina. So it’s always better to keep a check on blood cholesterol and triglyceride levels so that you can be more cautious about any heart problem during rise in levels of cholesterol, and try to control it. for more information home tests for cholesterol go to