MetroHealth Heart & Vascular Center
Your arteries are normally smooth and unobstructed on the inside but they can become blocked through a process called atherosclerosis, which means hardening of the arteries. As you age, a sticky substance called plaque can build up in the walls of your arteries.
Cholesterol, calcium, and fibrous tissue make up the plaque. As more plaque builds up, your arteries can narrow and stiffen. Eventually, as the process progresses, your blood vessels can no longer supply the oxygen demands of your organs or muscles and symptoms may develop.
Occasionally, surgery is needed to correct the blockages in your arteries.