Atherosclerosis is a type of disease that occurs mainly in the human arteries and is characterized by atherosclerosis. 1, the characteristics of atherosclerosis: human blood vessels include two categories of arteries and veins, arteries are responsible for transporting blood pumped from the heart to various organs throughout the body, and thus play a very important role. Atherosclerosis often starts by invading the intima of arteries, where the intima is damaged, cholesterol enters between the intima and the intima, at which time the body’s macrophages engulf the cholesterol, forming foam cells, gradually forming lipid streaks and lipid plaques under the endothelium, and further accumulating to form atherosclerotic plaques. Since the lipid accumulated in the arterial intima has a yellow atheromatous appearance, it is called atherosclerosis. 2.Diseases caused by atherosclerosis: After the formation of atherosclerosis, the plaque is expanding, accompanied by the accumulation of lipids and complex sugars, bleeding and thrombosis, causing damage to the structure of the vessel wall, and then fibrous tissue proliferation and calcium deposition, as well as the gradual metamorphosis and calcification of the middle layer of the artery, resulting in thickening and hardening of the arterial wall and narrowing of the vessel lumen. If the narrowing is severe, it will lead to ischemia and hypoxia of the organs. Once it develops to block the arterial lumen, the tissues or organs supplied by the artery will be ischemic or necrotic. Atherosclerosis is the main cause of coronary heart disease, cerebral infarction, and peripheral vascular disease. The development of atherosclerosis is a long-term process, but once it develops, it is difficult to reverse and often has serious consequences. Therefore, the causes of atherosclerosis need to be controlled as early as possible to prevent atherosclerosis.