What are the main aspects to look for when initially determining if it is coronary heart disease? Coronary heart disease, namely coronary atherosclerotic heart disease, is a heart disease caused by atherosclerosis of coronary arteries that narrow or block the lumen of blood vessels, or by functional changes (spasm) of coronary arteries that lead to myocardial ischemia and hypoxia or necrosis, according to the characteristics of the occurrence of the disease, the most common are divided into stable angina and acute coronary syndrome. The main symptoms of coronary artery disease are chest pain or chest discomfort symptoms: 1. often caused by exercise, mood swings, physical activity, cold, mental tension, full meals, etc.; 2. chest pain radiating to the jaw, back, left shoulder, upper abdomen; 3. the nature of the pain manifests as a kind of crushing dullness, accompanied by pronounced anxiety or sweating or a sense of near death; if there are the above mentioned symptoms, it is very necessary to conduct further tests to clarify whether it is coronary heart disease. Who are the main people at risk? How many people over the age of 18 with symptoms should be considered for coronary heart disease? High risk groups include; 1) smoking; 2) dyslipidemia; 3) hypertension; 4) diabetes and abnormal glucose tolerance; 5) obesity; 6) high calorie, high sugar and high salt diet; 7) family history of genetic predisposition; 8) type A personality, etc. Usually middle-aged and older people over 40 years old, especially after 49 years old, have a faster progression of atherosclerosis and a higher risk of coronary heart disease. If young people in their 20s and 30s show typical symptoms of coronary heart disease, do they need to consider coronary heart disease? Yes, because the age of clinical onset has been trending younger in recent years. Even in younger age groups, who present with typical symptoms of coronary heart disease, it is important to actively further investigate to clarify the diagnosis. What are the main aspects of past medical history? Past medical history mainly focuses on whether there is a history of chronic diseases such as “hypertension”, “hyperlipidemia” and “diabetes”. Do coronary heart patients always have changes in blood lipids, blood glucose and blood pressure? Changes in blood lipids, blood glucose and blood pressure are the main risk factors for the development of coronary heart disease, but they cannot be said to be necessary for the development of coronary heart disease.