T here are many misconceptions as to what a heart attack really is.
It is common knowledge that a heart attack is caused by a blockage that stops blood from flowing to the heart. Many believe it is the actual plaque or cholesterol that builds up and over time physically causes the blockage. While plaque, cholesterol and fat are big players in narrowing arteries, the cause of the blockage actually results from the body trying to heal itself after plaque ruptures. Cardiologist Mark Pirwitz, MD, explains. At any time the living cells overlying build-up in the artery walls can rupture at a particular location.