Coronary heart disease can be acquired even with normal blood lipids, because coronary heart disease is an atherosclerotic heart disease of coronary arteries, mainly because of atherosclerosis of blood vessels, and the risk factors of atherosclerosis are related to age and gender. First of all, middle-aged and elderly people over 40 years old are prone to coronary heart disease. Secondly, in addition to dyslipidemia, there are hypertension, smoking, diabetes and abnormal glucose tolerance. Other risk factors include obesity, particularly low activity level, as well as work tension and stress, and poor diet, often eating foods with high cholesterol, high sugar, high salt and high calories. Then there are genetic factors, some people have a quick temperament and competitive spirit, and such people are likely to have atherosclerosis. Finally, there are hyperhomocysteinemia and insulin resistance, and more recently, increased coagulation factors and viral and chlamydial infections, etc. All of these factors may lead to atherosclerosis and cause coronary heart disease.