I. Cholesterol is directly involved in the formation of atherosclerosis, which can lead to coronary heart disease, stroke, etc. Therefore, hypercholesterolemia is very dangerous; II. “Good” cholesterol: high-density lipoprotein-cholesterol (HDL-C), which transports excess cholesterol out of the arteries and back to the liver. As a result, it prevents atherosclerosis and reduces the risk of cardiovascular disease. The “bad” cholesterol: low-density lipoprotein-cholesterol (LDL-C), although the body needs a certain amount of LDL-C, the excess LDL-C will burrow into the artery walls and deposit into plaques, forming atherosclerosis. Third, each person’s specific situation is different, and the diagnostic criteria are also different , should be based on their actual situation to determine whether they have hypercholesterolemia.