Professor Hu Dayi, a famous cardiovascular expert, once said that no symptoms do not mean no danger. No symptoms means that you have tolerated such blood pressure for a long time. If it is sudden hypertension, there are usually symptoms. Long-term hypertension can lead to arteriosclerosis, resulting in heart, brain and kidney damage. When complications occur, it will be irreversible. The damage of hypertension to cerebral vessels: The brain is the general command of the human body, and nothing can go wrong. The blood vessels that provide nutrition for the brain maintain the normal work needs of the brain. Ischemia (such as cerebral infarction), hemorrhage (such as cerebral hemorrhage) and transient cerebral ischemia may all lead to physical disability and even death. These brain diseases are mainly caused by long-term hypertension. And in many cases, before these diseases occur, some patients' discomfort is not obvious. Epidemiological investigation shows that when systolic blood pressure increases 10mmHg, the incidence of stroke increases by 50%, diastolic blood pressure increases by 5mmHg, and the incidence of stroke increases by 46%. Long-term good blood pressure control can reduce the incidence of stroke by 35%-40%. From these two sets of data, it is not difficult to see the harm of hypertension to cerebral vessels and the benefits of antihypertensive therapy to the brain. The damage of hypertension to the heart: The heart is the source of blood supply, it is a pump, and its contraction and relaxation provide the necessary blood supply for the tissues and organs of the whole body. A good working state of the heart requires two necessary conditions: good myocardial function and good blood vessels (that is, coronary arteries) that supply heart nutrition. Elevated blood pressure will increase the load on the heart, and the heart needs to work harder to deliver enough blood to the whole body. In the long run, the muscles of the heart will become hypertrophy, the heart function will be damaged, and heart failure will occur. Hypertension is also a risk factor for cardiac atherosclerosis. Long-term hypertension causes systemic arteriosclerosis, resulting in plaque, especially obvious coronary artery, narrowing vascular lumen, reduced blood supply, and insufficient blood supply to the heart, leading to coronary heart disease and even myocardial infarction. Therefore, heart failure and coronary heart disease are two main kinds of heart damage caused by hypertension. Elevated blood pressure will increase the incidence of heart failure by 6 times and coronary heart disease by more than 40%, while well-controlled blood pressure can reduce the incidence of heart failure by 50%, coronary heart disease by 65,438+05% and myocardial infarction by 25%. The damage of hypertension to the kidney: The main function of the kidney is to excrete the metabolic products of the human body and keep the balance of the environment in the body. Long-term hypertension will lead to changes in renal artery function and pressure, cause changes in renal structure and function, and eventually lead to renal failure. This is also one of the common complications caused by hypertension. Controlling blood pressure can reduce renal function damage by about 25%.