Cholesterol's Harmful Effects

The Arteries eventually become narrower due to calcification and inelasticity (a condition known as stenosis). Eventually sufficient oxygen-rich blood is prevented from reaching the heart, due to the continued narrowing of the arteries.
Angina (discomfort and pain felt when a blockage in a coronary artery prevents oxygen-rich blood from reaching part of the heart), and in many cases heart attack (myocardial infarction) will ultimately result from this restriction of blood supply.