Cholesterol is thus classified according to what the lipoprotein carries:  Low-density lipoprotein (LDL)  Low-density lipoprotein (LDL) is responsible to carrying cholesterol to the cells. High LDL levels clog up arteries, leading to atherosclerosis, or narrowing of the arteries. Sometimes, chunks of this cholesterol break off and cause blockages, sometimes leading to heart attack... https://www.freedomfromdiabetes.org/blog/post/high-cholesterol-symptoms-causes-and-treatment-ffd/2847