There are various causes of coronary heart disease, such as high blood pressure, diabetes, hyperlipidemia, aging, prolonged smoking and dietary problems. 1. High blood pressure: If there is a history of high blood pressure, due to the long-term impact of increased blood pressure on the arteries around the heart, it is easy to cause vascular lesions, thus inducing coronary heart disease. 2. Diabetes mellitus: If diabetes mellitus exists, elevated blood glucose is likely to produce arterial wall lesions, such as coronary atherosclerosis, resulting in coronary heart disease. 3. Hyperlipidemia: Patients with hyperlipidemia are prone to increased blood viscosity, which can lead to arterial wall lesions, such as narrowing or blockage of the lumen of the arteries, thus inducing coronary heart disease. 4. Ageing: With ageing, the functions of various organs of the body begin to decline, and the arterial blood vessels are also prone to lesions, so it will increase the incidence of coronary heart disease. 5. Prolonged smoking: If you smoke often and inhale nicotine, tar and other harmful substances for a long time, it is easy to cause arteriosclerosis problems, so it produces coronary heart disease. 6. Dietary problems: usually if you often eat too greasy or high cholesterol food, resulting in increased blood viscosity, will also increase the probability of coronary heart disease. In daily life, pay attention to do not smoke and drink alcohol, diet to light mainly, so as not to aggravate the symptoms, pay attention to regular review.