Cholesterol and other fatty molecules in the blood can stick to the inner lining of the arteries and be transported into the middle layer of arteries. This build up can lead to plaque accumulating in the arteries. As a result, blood flow may be blocked and lead to serious health consequences.

Dr. Peter Fail: Literally any artery that is pumping blood is suspect for blockages. It's kind of like when you get a clogged fuel line and the carburetor and the engine aren't going to work...that's exactly what a blockage does. A blockage doesn't allow the motor to work properly.

It's a story that begins in the liver where our bodies make two kinds of cholesterol, HDL, or good cholesterol, and LDL, the bad. LDL does its damage by sticking to the inner walls of the arteries, while HDL can even clear out existing blockages. But when too much LDL builds up, it accumulates as plaques that stiffen and constrict the arteries. The larger these plaques become, the greater chance that they will rupture, break off or simply cut off blood flow leading to aneurysm, heart attack or stroke.

VO: The blockages could eventually clog to the point where no blood can get through. The result usually leads to what doctors call a myocardial infarction. The rest of us call it a heart attack.