1. Middle-aged and elderly people over 40 years old. The onset of sudden death from myocardial infarction and coronary artery disease is directly proportional to age. There are more young male patients than young female patients, but postmenopausal women and women over the age of 60 are at almost equal or even greater risk than men. The likelihood of heart attack is higher in the elderly. 2. Smokers. Smokers are at least two times more likely to develop the disease than non-smokers. This is proportional to the number of cigarettes smoked per day. In the age group of thirty-five to forty-five, the number of deaths from coronary artery disease among smokers is more than five times the number of deaths from coronary artery disease among nonsmokers. Cigarettes can damage arteries, accelerate the formation of atherosclerosis and make the heart hypoxic. 3, people with bad eating habits: often into the higher calorie diet, more animal fat, cholesterol is prone to the disease. At the same time, people who eat a lot of food are also prone to this disease. 4, hypertension or diabetes, will increase the risk of coronary artery disease. Men with diabetes are two times more likely to develop coronary artery disease than other men, and women with diabetes are five times more likely to develop coronary artery disease than other women. Having high blood pressure means that the heart has to work twice as hard. The higher the chance of a heart attack, the higher the chance of a heart attack. Elevated blood pressure is an independent risk factor for coronary heart disease. Patients with hypertension are four times more likely to suffer from the disease than those with normal blood pressure. 5, people with a family history of coronary heart disease, if someone in the family suffers from coronary heart disease, it is more likely to have a heart attack, especially if a first-degree relative has a history of early onset coronary heart disease. 6, overweight people, the possibility of coronary heart disease than people with normal weight to be greater. People who are more than 20% overweight are three times more likely to have a heart attack than those who are of healthy weight. 7. People who lack physical activity. If you are engaged in a sedentary job, you are more likely to develop coronary artery disease than workers who are engaged in physical labor. Lack of exercise heart is not strong people have twice the chance of a heart attack than healthy people. 8, long-term use of birth control pills 35 years of age or older women, than women using other forms of contraception are more likely to develop coronary heart disease. 9, hyperlipidemia: due to genetic factors, or excessive fat intake, or lipid metabolism disorders resulting in dyslipidemia. Such as total cholesterol, triglycerides, LDL cholesterol increase is related to the disease, while the reduction of high-density lipoprotein susceptible to the disease. The amount of blood cholesterol should preferably be lower than 200 mg per 100 ml (5.2 mmol/L). The higher the level, the higher the risk. 10. Persistent mental stress is one of the recognized causative factors. Brain workers are greater than manual workers, and jobs that often have a sense of urgency are more likely to be diseased. Among the above factors, high blood pressure, overweight and high cholesterol are the biggest risk factors for coronary heart disease.