According to a study presented by Chinese scientists at the 238th National Meeting of the American Chemical Society, oxycholestrol (found in fried and processed food) boosts total cholesterol levels (both the evil LDL and the good HDL) and promotes "atherosclerosis" - the hardening of the arteries.
Apparently, food manufacturers intentionally produce oxycholestrol in the form of trans-fatty acids and partially-hydrogenated vegetable oils to enhance the taste of their food. Devils!
As usual, eating healthy, anti-oxidant rich food such as grains, fresh fruits, vegetables, beans, and nuts would promote a healthy heart and kick oxycholestrol's ass.
Much more info from the source: ScienceDaily.