The etiology of atherosclerosis is not yet fully understood, but the main risk factors include age and gender. The older the age, the higher the probability of occurrence, and the probability in men is higher than in women. Abnormal blood lipids, with the main treatment target being low-density lipoprotein, hypertension, smoking, glucose tolerance abnormalities, and obesity are all possible risk factors. Additionally, we cannot ignore family history; if there is a history of early-onset coronary heart disease in the family, then this risk factor is also very high. Moreover, personality is related, with Type A personalities being more prone to atherosclerosis. Dietary habits are also related; patients who often eat high-calorie, high-animal-fat, high-cholesterol foods are prone to develop the condition. There are also patients taking oral contraceptives, who are likely to develop atherosclerosis.