Two types of proteins carry cholesterol in the bloodstream. High-density lipoprotein, also called HDL cholesterol, carries the cholesterol to your liver. Your liver eliminates excess cholesterol from your body, so HDL is known as the “good” cholesterol. Low-density lipoprotein allows cholesterol to build up in your arteries. That is why it is known as “bad” cholesterol. People with high LDL cholesterol levels have an increased risk of developing coronary artery disease. A high level of HDL in your blood reduces your risk for this disease.