What causes plaque to form in arteries?
Although many risk factors are well known, the exact causes of atherosclerosis are not clear. Too much cholesterol in the blood, damage to the artery wall, and inflammation appear to play important roles in plaque buildup. Researchers are studying why and how the arteries become damaged, how plaque develops and changes over time, and why plaque can break open and lead to blood clots. There may be other factors that prove to be important in causing atherosclerosis.
