In this heart condition, excess LDL cholesterol builds up as plaque in the small arteries of your heart, narrowing and stiffening them. This reduces blood flow, which can make you feel tired or short of breath, as well as cause chest pain, notes the National Heart, Lung and Blood Institute (NHLBI).
Your body needs cholesterol to build healthy cells, but high levels of cholesterol can increase your risk of heart disease. With high cholesterol, you can develop fatty deposits in your blood vessels. Eventually, these deposits grow, making it difficult for enough blood to flow through your arteries.
