There are many different kinds of heart disease. The most common is atherosclerosis (ath-uh-roh-skluh-roh-sis), the buildup of fatty deposits or plaques in the walls of arteries. As plaque builds up, there is less space for blood to flow normally and deliver oxygen through­out the body, including to the heart. Depending on where the buildup is, it can cause a heart attack, leg pain, or a stroke. Atherosclerosis is not part of normal aging and can be serious. Read more