Our heart beats continuously throughout the day, transporting blood throughout the body, and the heart itself requires a strong blood supply. Acute myocardial infarction occurs when the arteries supplying the heart become blocked, resulting in ischemic necrosis of the myocardium in the supplied area. It is not difficult to imagine how fatal the risk of myocardial infarction is when the heart muscle “strikes” and blood cannot circulate throughout the body! So, what exactly is myocardial infarction? Can myocardial infarction be hereditary? 1.What is myocardial infarction? Myocardial infarction mostly occurs on the basis of atherosclerotic stenosis of coronary arteries (coronary heart disease). Due to certain triggers, the atheromatous plaque of coronary arteries ruptures, platelets in the blood gather on the surface of the ruptured plaque, forming thrombus and suddenly blocking the lumen of coronary arteries, resulting in ischemic necrosis of myocardium; in addition, acute myocardial infarction can also be induced by a drastic increase in myocardial oxygen consumption or spasm of coronary arteries. 2.What are genetic diseases and polygenic diseases? Genetic diseases are diseases caused by changes in genetic material or controlled by disease-causing genes. A genetic disease is a disease that is completely or partially determined by genetic factors. Polygenic genetic disease means that the occurrence of a disease is controlled by more than two pairs of alleles, but polygenic genetic disease is also influenced by a variety of complex factors such as the environment, so it is also called multifactorial disease. It is a disease that is influenced by genetic and environmental factors together. 3, myocardial infarction will not be inherited Myocardial infarction is only a sudden acute event in coronary heart disease, is not inherited. The underlying disease of myocardial infarction is coronary heart disease, there is no evidence that coronary heart disease is a genetic disease and polygenic disease, and the heredity of coronary heart disease is not clear, the occurrence and development of coronary heart disease is a chronic process, mostly as a result of the combined effect of environmental and other high-risk factors, but it is certain that this type of disease is a family tendency. Regarding the family tendency, if one parent suffers from coronary heart disease, the children are twice as likely to develop the disease, especially if the parent suffers from myocardial infarction before the age of 50, the children are more likely to develop the disease. It is also more likely to induce coronary heart disease, which may be partly due to the risk factors of coronary heart disease such as hypertension, certain types of hyperlipidemia, obesity and other factors. 4, high risk factors for heart attack have genetic tendency and family aggregation phenomenon Among the high risk factors for the occurrence of heart attack hypertensive disease and hyperlipidemia may have a genetic tendency to occur. In particular, familial hypercholesterolemia and primary hypertensive disease. In the family history of coronary heart disease, there is mention of coronary heart disease susceptibility gene, but the susceptibility gene can only suggest susceptibility to coronary heart disease, not absolutely, so this also cannot determine the family history of coronary heart disease with high incidence of disease rather than the result of genetic disease. However, if our parents suffer from coronary heart disease, we still need to be vigilant because our common eating habits, lifestyle and living environment will greatly increase the probability of developing coronary heart disease like our parents. 5.How to avoid the occurrence of heart attack? First of all, we should pay attention to low-salt and low-fat diet, quit smoking and drinking, exercise and lose weight appropriately, keep a happy mood and regular work and rest. If the patient usually has high blood pressure, high blood lipid, high blood sugar these problems, then the appropriate antihypertensive, lipid, sugar, treatment, blood pressure, lipid, blood sugar, control within a relatively standard range, so as to stop or avoid the aggravation of atherosclerosis, so as to prevent the occurrence of coronary heart disease myocardial infarction. Therefore, myocardial infarction is not hereditary, but we still need to be alert to the trend of high incidence of coronary heart disease and other high-risk factors (high blood pressure, high blood lipids, high blood sugar) in families. Adopt good lifestyle habits, pay attention to regular medical checkups, and seek further treatment if you have other high-risk diseases.