Clogged arteries refers to a condition in which deposits of fatty plaque within an artery leading to the heart or brain restricts blood flow. Due to this, the blood carrying oxygen and nutrients cannot reach different body organs and tissues, potentially causing huge damage and preventing organs from functioning properly. This is a serious condition that is not easily detectable. The exact cause behind clogged arteries is still unclear. However, experts believe it starts with damage or injury to the inner layer of an artery.